Der Eisendrache — Black Ops 3 Zombies Easter Egg Guide

In this guide: full main-quest walkthrough, recommended loadout, best GobbleGums, side Easter eggs & songs, boss strategy · Hard, ~45–75 min.

Open the interactive guide →
Black Ops 3 · 2015

Der Eisendrache

An Austrian mountain fortress over a Group 935 rocket site. Recover the ancient bow, upgrade it to one of four elements, and in My Brother's Keeper erase the Ultimis Tank Dempsey. Widely rated one of the best BO3 maps.

Released 2 Feb 2016 Wonder Weapon: Wrath of the Ancients (bow)Boss: corrupted KeeperRagnarok DG-4
HardEst. time45–75 minPlayers1–4 (solo-capable)Updated8 Sep 2026
Documented here10 walkthrough steps · 15 side Easter eggs (incl. 2 songs) · 3 weapon builds · 6 named areas · 3 sources cross-checkedCounted from this page, not estimated. We publish what is documented rather than a percentage of what might exist — nobody can honestly claim to know the full list.

Quick answers

How do you complete the Der Eisendrache Easter egg?

It is rated Hard and takes about 45–75 min. The run breaks down like this:
  1. Turn on power
  2. Build Pack-a-Punch (teleport 3 pieces)
  3. Feed the 3 dragons → the Wrath of the Ancients bow
  4. Upgrade one elemental bow per player
  5. Build the Ragnarok DG-4
  6. Fuse the Death Ray and flip it to Protect
  7. Charge the teleporter, find 4 wisps → travel to the past
  8. Note Groph's safe code; do the rocket Simon Says
Each stage is written out in full — with the exact locations, the order things must be done in and what to do when a step refuses to trigger — in the walkthrough below.

What is the Wonder Weapon on Der Eisendrache?

Wrath of the Ancients (bow). How you get hold of it — the parts, the crafting steps and the upgrade if it has one — is covered step by step in the walkthrough, along with whether it is required for the main quest or simply worth the detour.

Who is the boss on Der Eisendrache?

corrupted Keeper. The walkthrough covers the whole encounter: how the fight is structured, where the damage goes, what the arena throws at you between phases, and the loadout worth bringing before you commit to it.

How long does the Der Eisendrache Easter egg take?

About 45–75 min for a run that already knows the steps, and we rate it Hard. A first attempt takes considerably longer — almost all of the time goes on setup rather than the finale, so knowing the order in advance is what shortens a run.

Can you do the Der Eisendrache Easter egg solo?

Players: 1–4 (solo-capable). It is solo-capable. Co-op mainly helps with the timed steps, where a second player can hold a zombie or cover a second position, and it makes the ending far more forgiving.

Is there a song Easter egg on Der Eisendrache?

Yes — 2: “Dead Again” and Music box & gramophones. Elena Siegman (Kevin Sherwood). Interact with 3 teddy bears: Samantha's bedroom chair, the prison cell across from Juggernog, and a truck on the rocket pad. Full trigger steps for each one are in the side Easter eggs section.

What are the main areas on Der Eisendrache?

6 are documented: Undercroft / Pyramid, Mission Control (bow room), Rocket Launch Pad, The Bastion (Death Ray), Clock Tower and Samantha's Bedroom / Courtyard. Knowing the names matters more than it sounds — most guides, including this one, describe locations by area name rather than by direction.

How many side Easter eggs are on Der Eisendrache?

15 are documented here — side quest, free weapon, song, mechanic, buildable and reward. Each one has its own steps rather than a one-line mention, so they can be followed mid-game.

When was Der Eisendrache released?

2 Feb 2016.

Key areas

Undercroft / Pyramid

The crypt MPD, workbenches and low-gravity wall-runs — hub for the bow rituals and the boss fight.

Mission Control (bow room)

Where the base Wrath of the Ancients is claimed after feeding the three dragon statues.

Rocket Launch Pad

Outdoor pad with the trucks and the rocket used across several quest steps.

The Bastion (Death Ray)

The trap by the power switch, toggled Destroy/Protect — central to the main quest.

Clock Tower

Spiral-stair tower with the weathervane and terminals; used for bows and code entry.

Samantha's Bedroom / Courtyard

Song objects, the music box, the courtyard dragon statue and a traversal hub.

Steps at a glance

  1. Turn on power
  2. Build Pack-a-Punch (teleport 3 pieces)
  3. Feed the 3 dragons → the Wrath of the Ancients bow
  4. Upgrade one elemental bow per player
  5. Build the Ragnarok DG-4
  6. Fuse the Death Ray and flip it to Protect
  7. Charge the teleporter, find 4 wisps → travel to the past
  8. Note Groph's safe code; do the rocket Simon Says
  9. Retrieve and place the Keeper Stone
  10. Feed the Keeper at 4 ritual circles (correct bows)
  11. Defeat the corrupted Keeper
  12. Charge and seat the Summoning Key
You need one upgraded elemental bow per player before the quest can finish — the ritual step won't progress otherwise. In LOCAL (offline / split-screen) games all four bows must be upgraded no matter how many players — a common 'ritual won't progress' trap. In the ritual circles, match your bow's element to the circle's glow colour (a wrong bow does nothing), and save the Ragnarok charges for the final Keeper's chest window.

Before you start

What to have in hand before step 1 — from the loadout notes, from the walkthrough itself, and from the map's own quest documentation where the gate is never stated in a step.

Loadout & perks
  • Storm and Void are the most beginner-friendly elements to upgrade the bow into. — step 3
Items to bring / craft first
  • Feed each dragon-head statue about 8 kills (courtyard, Mission Control, Undercroft) — wait for the chewing animation each time — before the Wrath of the Ancients appears behind the knight's tomb. — step 2
Round and timing gates
  • The Storm and Wolf bow paths both need Anti-Gravity activated first — their wall-run steps require the low-gravity state. — step 3
  • Finding the four wisps after charging the teleporter is timed, and the spots rotate each attempt. — step 6
  • The Rocket Launch Pad Simon Says spawns infinite Hellhounds while it runs, right after the Clock Tower console. — step 7
Point of no return / one-attempt steps
  • Feeding the Keeper spans several rounds across four ritual circles — go in with loadout and perks already sorted. — step 9
Solo vs co-op
  • You need one upgraded bow per player for the ritual — ranked solo needs one; local or unranked needs all four. — step 3

Set aside 45–75 min · 1–4 (solo-capable) · the full loadout is further down this page

Full walkthrough

0% complete

The quest in the order this guide runs it — tap any step to jump to it, and it fills in as you tick steps off.

1
Bastion · Undercroft

Power & Pack-a-Punch

+

Flip the power switch by the Death Ray. Then teleport the three PaP pieces from three teleporters — behind the power switch, the underground chamber past the first courtyard dragon, and the gated 1500-point teleporter. Pack-a-Punch then works in the Undercroft.

2
Three dragon statues

Build the bow

+

Kill zombies beside each dragon-head statue (about 8 each; wait for the chewing animation) — courtyard near spawn, Mission Control above the fireplace, and the Undercroft pyramid room. Collect the Wrath of the Ancients from behind the knight's tomb in Mission Control.

3
See side EEs

Upgrade a bow (one per player)

+

Each player upgrades the bow to one element — Fire, Storm/Lightning, Wolf or Void. All players need an upgraded bow for the later ritual. Full steps are in the Side Easter Eggs section below.

Tip: Storm and Void are the most beginner-friendly.

4
Workbench

Build the Ragnarok DG-4

+

Collect three parts — from a killed Panzersoldat's chest, by pulling the lever during a rocket test, and a floating part grabbed mid-air off a Wundersphere launch pad — and assemble at a bench.

5
The Bastion

Fuse the Death Ray → Protect

+

Insert the fuse on the clock-tower-facing side to start the current, then pull the lever on the opposite side to switch the trap from Destroy to Protect.

6
Undercroft teleporter

Charge the teleporter & find the wisps

+

Shoot the prongs above the teleporter until it glows, then find 4 wisps within the time limit using uncharged bow shots (spots rotate — clock, telephone, globe, crafting table, etc.). Everyone enters the purple-lit teleporter to travel to the past.

7
Past lab · Clock Tower · Rocket

Safe code & rocket Simon Says

+

In the past, grab the soul canister and fuses and memorise the 3 symbols Dr. Groph enters into the safe. Enter that code at the clock-tower terminal to open the safe (Tesla coils + keycard), install the coils in the two Bastion towers and set the Death Ray to Destroy. Then clear both Simon Says consoles — the Clock Tower first, then the Rocket Launch pad (infinite Hellhounds spawn while they run) — set the Death Ray back to Protect and press the green launch button so the coils strike the rocket. Collect the Vril Generator from Dempsey's crashed cryo-pod in the second courtyard.

8
Past Undercroft · Double Tap

Retrieve & place the Keeper Stone

+

Redo the wisp/teleport sequence, open the crate holding the Keeper Stone, and place it under the lamppost near Double Tap.

9
Crypt socket · 3 ritual circles

Feed the Keeper

+

Insert the Vril Generator (the golden rod from the crashed rocket) into the crypt socket, then follow the spectral Keeper to four ritual circles. Stand in each and kill zombies close by using the correct-coloured bow (the circle's glow tells you which); part-way through, insert the Keeper Stone in the wall slot on the Double Tap route. Spans several rounds.

10
MPD arena (Undercroft)

Defeat the corrupted Keeper

+

Trigger anti-gravity on the blue MPD panels to enter the fight (skeletons and Panzers spawn). Damage the boss's chest by deploying the Ragnarok DG-4 on the lightning orbs at centre-map — about three phases. Then charge the Summoning Key on the MPD and seat it at the clock-tower terminals to finish.

Reward: the My Brother's Keeper completion — the quest saves and the ending cutscene plays.

Side Easter Eggs & extras

Everything beyond the main quest. Tap any entry to open the full how-and-where breakdown.

Side quest

The elemental bows — overview

+

Upgrade the Wrath of the Ancients into one of four elements — you need one per player for the main quest. All four share the base-bow start and each ends by charging its forged arrow at that colour's Undercroft altar. Storm and Void are the most beginner-friendly. The Storm and Wolf paths both need Anti-Gravity activated first — their wall-run steps require the low-gravity state.

  1. Base bow first: feed the three dragon-head statues (~8 kills each, waiting for the chewing animation) and collect the Wrath of the Ancients from behind the knight's tomb in Mission Control — a charged shot uses two arrows and starts every upgrade.
  2. You need one upgraded bow per player (ranked solo needs 1; local / unranked needs all four). Each element's forged arrow is charged with nearby kills at its matching altar in the Undercroft.
  3. Pick your element below — Storm and Void are the most forgiving; Fire and Wolf add rocket-test timing and painting / skull hunts.
Side quest

Storm / Lightning Bow

+

Weather-vane arrow → light three bonfires → the five-symbol wall-run → charge three lightning urns and imbue the bonfires → forge at the blue altar.

  1. Shoot the weather vane on the castle roof with the base bow and take the dropped broken arrow.
  2. Ignite three distant bonfires with charged arrows: the village hill below the castle, the rampart outside the Clock Tower, and the hill above/right of the Rocket Launch site.
  3. During Undercroft low gravity, wall-run across all five blue wall symbols without touching the floor (a touch resets the pass — wait for the next low-gravity cycle).
  4. Charge three urns by killing ~6 zombies near each: inside the Clock Tower, the room above Double Tap, and the tunnel toward the Rocket Launch site.
  5. Stand by a charged urn, fully draw until the arrow turns electrical, keep it drawn and fire at one bonfire; repeat for the other two urns/bonfires (an urn cannot be reused).
  6. Return to the weather-vane tower and interact with the blue electrical cloud at its base for the forged arrow.
  7. Place it in the blue altar in the Undercroft and kill nearby zombies until it stops taking souls; take the Storm Bow.
Side quest

Void / Demon Gate Bow

+

Void symbol by Double Tap → release the Trophy-Room urn → six skulls → feed six crawlers → decode the three spoken words on the knight statues → forge at the purple altar.

  1. Charged-shoot the purple Void symbol above the tunnel gate near Double Tap.
  2. In the trophy room beneath the Clock Tower, melee-kill a zombie on the glowing purple floor tile, then interact with the broken tile to release the urn.
  3. Collect six skulls: broken wall near Mule Kick; window ledge right of the church entrance; toy chest in Samantha's room; wall near Double Tap; sink in the teleporter room; truck bed at the Rocket Launch site.
  4. Lead six crawlers one at a time into the purple circle so the skulls consume them.
  5. Charged-shoot the floating urn and note the three spoken words in order (possible words: Door, Roe, Horn, Heart/Hearth, Crown, Griffin).
  6. Kill zombies until you have picked up six purple symbol drops (they fade fast).
  7. Interact with the knight statues matching the three spoken words in spoken order and record the three symbols they reveal.
  8. Shoot the three matching floor symbols in the purple circle in that order (a wrong order makes the skulls attack — leave, survive, re-enter); interact with the tile for the arrow.
  9. Charge it at the purple altar in the Undercroft; take the Void Bow.
Side quest

Wolf Bow

+

Four wolf-king paintings in order → wolf skull from the rocket flag → follow the spectral wolf to three bone piles → wall-run the wolf symbol → forge at the green altar.

  1. Interact with the four wolf-king paintings in story order — king on the throne with a wolf; armoured king on horseback; burning castle / dark creature; king's skeleton — spread across the Clock Tower, the room beneath it near Mule Kick, the church balcony, and the corridor beyond Samantha's room.
  2. Take the broken arrow from the newly opened wall by the Undercroft stairs.
  3. At the Rocket Launch site, charged-shoot the flag above the sealed doorway and pick up the falling wolf skull.
  4. Place the skull on the headless wolf skeleton beside the green altar in the Undercroft.
  5. Follow the spectral wolf to three bone piles; at each, feed souls with nearby kills and take the bone fragment when the wolf scratches the pile.
  6. At the final Undercroft wall during low gravity, wall-run and shoot the glowing wolf symbol above the hole, then stand on the raised platform and interact with the hole for the arrow.
  7. Place it in the green altar, charge with nearby kills, and claim the Wolf Bow.
Side quest

Fire / Rune Prison Bow

+

Fire symbol in the Clock Tower → after a rocket test the sky fireball glows for only ~10 seconds, so be ready to shoot it → hit the three mid-air Wundersphere fire rings (each stays lit once hit) → chain each lit ring to its fixed rune fireplace (Clock Tower→Supply Room, castle top→Church, Double Tap bridge→Samantha's room) → 4-shot volcanic-rock escort → forge at the red altar.

  1. Shoot the red Fire symbol high in the Clock Tower and take the broken arrow from the opened wall.
  2. Wait for a rocket test; the instant the safety doors reopen, step outside and shoot the glowing fireball in the sky above the concrete building.
  3. Use the three Wundersphere launch routes and, while airborne, shoot the three glowing red ground circles (a direct hit keeps a circle lit; repeat any that do not stay).
  4. Stand inside each circle and kill zombies until its fire charge completes.
  5. Interact with the Clock Tower mechanism to reveal a random rune, then find the castle fireplace bearing that same rune.
  6. From the charged circle nearest that fireplace, fire charged arrows into the ground to chain temporary fire circles toward it (each shot must land in the active fire), and finish by shooting into the fireplace to ignite it.
  7. Return to the Clock Tower solar-fire mechanism and interact with the completed fire energy for the arrow.
  8. Place it at the red altar, feed nearby souls, and take the Fire Bow.
Free weapon

Ragnarok DG-4

+

Buildable gravity-spike wonder weapon: Panzersoldat chest part, rocket-test lever part and a floating Wundersphere part, assembled at a bench. Spikes clear hordes and give a safe revive.

  1. Part 1: kill the Panzersoldat boss (first appears ~round 8-12) — it drops the first part
  2. Part 2: near the Clock Tower, activate the launch pad and trigger the Death Ray; a part appears high in the sky — use a Wundersphere to launch up and grab it mid-air (collect within ~2 minutes)
  3. Part 3: during the scripted rocket test, flip the lever behind the rocket (red→green) then reach the teleporter console before the doors seal until all three lights are green; the part appears in the teleporter
  4. Build all three at a workbench (Undercroft/pyramid) for the Ragnarok DG-4 gravity spikes
Song

“Dead Again”

+

Elena Siegman (Kevin Sherwood). Interact with 3 teddy bears: Samantha's bedroom chair, the prison cell across from Juggernog, and a truck on the rocket pad.

  1. Interact with 3 teddy bears, in any order
  2. Samantha's bedroom — sitting on a chair
  3. Prison cell across from Juggernog — on a crate
  4. Rocket launch pad — in the passenger seat of one of the trucks
  5. 'Dead Again' by Elena Siegman plays; replayable afterward from the Data Vault
Song

Music box & gramophones

+

'Samantha's Lullaby' plays from the music box on Samantha's nightstand; activating the 3 gramophones (Samantha's bedroom, Control Room, pyramid stairs) plays a Requiem track.

  1. Samantha's Lullaby: in Samantha's bedroom, hold Use on the music box on the nightstand
  2. Requiem (Dies Irae): hold Use on the 3 gramophones
  3. Gramophone 1 — Samantha's bedroom, on a shelf facing away from the teddy bear
  4. Gramophone 2 — the Control Room, on a chair
  5. Gramophone 3 — the Pyramid room, facing the stairs down to the crypt (order doesn't matter)
Mechanic

Wundersphere & Death Ray

+

500-point Wundersphere pads launch you for traversal and mid-air grabs; the Death Ray trap toggles Destroy/Protect and is tied into the quest.

Buildable

Zombie Shield (Der Eisendrache)

+

The map's Zombie Shield — one part in each of three regions (first courtyard, second courtyard/church, and the Undercroft during low gravity, three possible spawns each). Build at the Undercroft bench or the bench above Double Tap; the back plate soaks hits and the boost aids revives. Enter the boss with a fresh shield. Full steps below.

  1. Part 1 (tank plate): first Courtyard, near the Double Tap gate, usually on stacked crates
  2. Part 2 (iron eagle top): the second Courtyard / Church area
  3. Part 3 (bulletproof glass): the Undercroft — activate anti-gravity to wall-run up and pull it off the wall
  4. Build all three at the Undercroft bench (or the bench above Double Tap); the back plate soaks hits and the boost aids revives — enter the boss with a fresh shield
Reward

Panzer Helmet

+

Drop and trigger the three ceiling metal claws — first-courtyard balcony, the armour corridor, and the stone tunnel by Quick Revive — and use each to kill a Panzersoldat; permanently reduces Panzer damage.

Reward

Plunger

+

Open the Fire-Bow wall, place a Ragnarok in the Clock Tower mechanism and stop the clock at ~9:35; time-travel, collect the plunger, then kill a Panzer to charge it as a temporary melee upgrade.

Free reward

Free Mega GobbleGum

+

Take the small plant from the teleporter-room shelf; place it on the matching shelf during a past visit, then interact with the grown plant back in the present.

Mechanic

Skeleton mode

+

With In Plain Sight equipped, activate the three hidden skull targets to replace normal zombies with skeletons.

Reward

Smaller secrets

+

Wall-run the single blue square facing Pack-a-Punch for a free Death Machine; wall-run the Undercroft pressure symbols to reveal the BRM wall-buy; shoot the ceiling moon then the aligned rocket in the church command room; and complete the gondola fuse sequence for the alternate cable-car trip.

GobbleGum reference — Black Ops 3

All 63 Black Ops 3 GobbleGums by tier — Classic (free, packs of 5), Mega, Rare Mega and Ultra-Rare (Black-Market / Liquid Divinium). Filter by tier. Some seasonal/Chronicles gums are grouped as compiled.

Always Done Swiftly

Classic

Faster ADS walk and raise/lower for 3 rounds.

Arms Grace

Classic

Respawn with the guns you bled out with.

Coagulant

Classic

Longer bleedout time.

In Plain Sight

Classic

Zombies ignore you (2×, 10s each).

Stock Option

Classic

Ammo drawn from your stockpile, not the magazine (2:30).

Impatient

Classic

Respawn near the end of the current round.

Sword Flay

Classic

Melee does 5× damage (2:30).

Anywhere But Here!

Classic

Teleport to a random location with a concussive blast (2×).

Danger Closest

Classic

Zero explosive self-damage for 3 rounds.

Armamental Accomplishment

Classic

Faster weapon switch, melee and item use for 3 rounds.

Firing On All Cylinders

Classic

Fire while sprinting for 3 rounds.

Arsenal Accelerator

Classic

Charge your special weapon faster for 10 min.

Lucky Crit

Classic

Better Alternate Ammo Type proc for 1 round.

Now You See Me

Classic

All zombies chase only you (2×, 10s).

Alchemical Antithesis

Classic

Every 10 points earned becomes 1 reserve ammo (2×, 60s).

Aftertaste

Mega

Keep perks on revive (3 rounds).

Burned Out

Mega

Your next hit ignites nearby zombies (2 hits).

Dead of Nuclear Winter

Mega

Spawns a Nuke (2×).

Ephemeral Enhancement

Mega

Held gun becomes Pack-a-Punched for 60s (2×).

I'm Feeling Lucky

Mega

Drops a random power-up (2×).

Immolation Liquidation

Mega

Drops a Fire Sale (3×).

Licensed Contractor

Mega

Drops a Carpenter (3×).

Phoenix Up

Mega

Revive all team-mates with perks.

Pop Shocks

Mega

Melee electrocutes (5×).

Respin Cycle

Mega

Re-spin the Mystery Box (2×).

Unquenchable

Mega

An extra perk slot when at 4.

Who's Keeping Score?

Mega

Drops Double Points (2×).

Idle Eyes · Flavor Hexed · Board Games · Board To Death · +8 more

Mega

12 further Megas incl. Crawl Space, Fatal Contraption, Unbearable, Disorderly Combat, Slaughter Slide, Mind Blown (DLC/Chronicles).

Cache Back

Rare Mega

Drops a Max Ammo.

Kill Joy

Rare Mega

Drops an Insta-Kill (2×).

On the House

Rare Mega

Drops a Random Perk Bottle.

Wall Power

Rare Mega

Your next wall-buy comes Pack-a-Punched.

Undead Man Walking · Fear in Headlights · Temporal Gift · Crate Power · Bullet Boost · Extra Credit · Soda Fountain

Rare Mega

7 further Rare Megas (DLC/Chronicles).

Killing Time

Ultra-Rare

Freeze all zombies for 20s; shot ones die.

Perkaholic

Ultra-Rare

Every perk on the map.

Near Death Experience

Ultra-Rare

Proximity revive with perks (3 rounds).

Reign Drops

Ultra-Rare

All core power-ups at once (2×).

Shopping Free · Round Robbin' · Head Drama · Secret Shopper · Profit Sharing · Self Medication · Power Vacuum

Ultra-Rare

7 further Ultra-Rares (DLC/Chronicles).

Projectile Vomiting · Newtonian Negation · Eye Candy · Tone Death

Classic (Whimsical)

4 cosmetic-only DLC classics.

Dark Ops & prestige cards (Black Ops 3)

Black Ops 3 has few Zombies calling cards and mostly no per-map cards; its main-quest cards are on the maps themselves.

Primis Rulz calling card

Primis Rulz

Dark Ops

Complete all the Zombies story quests.

Prestigious Protagonist calling card

Prestigious Protagonist

Prestige

Enter Prestige after reaching Deresurrectionist (Zombies rank Lv 35).

When it isn't working

The stalls that actually cost people runs on this map, and what to do about each.

TroubleshootingEach of these is quoted from the step it belongs to, derived from a gate the guide already states, or researched from the map's own quest documentation — nothing here is guesswork about what might be going wrong.

Dragon statue kills don't seem to count

You must wait for the chewing animation on each kill, not just the kill itself — pace your kills near the statue instead of dumping them fast (step 2).

Can't find the wisps in time

The spots rotate every attempt and only show via uncharged bow shots — sweep the usual rotation (clock, telephone, globe, crafting table) rather than one fixed spot (step 6).

Getting swarmed during the rocket Simon Says

Infinite Hellhounds spawn while the consoles run — clear the Clock Tower console first, then the Rocket pad, and hold position rather than chase kills (step 7).

Can't damage the corrupted Keeper's chest

Direct fire does not work — only deploying the Ragnarok DG-4 onto the centre-map lightning orbs does (step 10).

Storm/Wolf bow wall-run sections won't work

They need Anti-Gravity activated first (step 3).

Common Der Eisendrache questions

Direct answers to the specific things players look up mid-game — part locations, puzzle steps and more.

Why won't the ritual step progress?

Because every player needs their own upgraded elemental bow. And in local, offline or split-screen games all four bows have to be upgraded regardless of how many people are playing — that is the trap that stalls most offline runs.

Which bow should I upgrade first?

Storm and Void are the most beginner-friendly. Storm and Wolf both need Anti-Gravity switched on first, because their wall-run steps depend on the low-gravity state.

Why is my bow doing nothing in the ritual circle?

You are standing in a circle that does not match your bow. Match your bow's element to the colour the circle is glowing — a wrong element simply does nothing, with no feedback to tell you why.

How do I get the base bow?

Feed the three dragon statues, then claim the Wrath of the Ancients in Mission Control. Every elemental upgrade starts from that same base bow, and each one ends by charging its forged arrow at that colour's Undercroft altar.

How do I build the Ragnarok DG-4?

Three parts: a Panzersoldat chest part, a lever part from a rocket test, and a floating Wundersphere part, assembled at a bench. The gravity spikes clear hordes and make revives safe — but save your charges for the Keeper's chest window in the boss fight.

What is the Death Ray, and what does Protect do?

The trap by the power switch, and it toggles between Destroy and Protect. Fusing it to Protect is an actual main-quest step, so it is not simply a trap you buy and forget.

How do I get the Panzer Helmet?

Drop and trigger the three ceiling metal claws — on the first-courtyard balcony, in the armour corridor, and in the stone tunnel by Quick Revive — and use each one to kill a Panzersoldat. It permanently reduces the damage Panzers do to you.

How do I get the Plunger?

Open the Fire Bow wall, place a Ragnarok in the Clock Tower mechanism and stop the clock at around 9:35. Time-travel, collect the plunger, then kill a Panzer to charge it into a temporary melee upgrade.

Where are the three teddy bears?

The chair in Samantha's bedroom, the prison cell across from Jugger-Nog, and a truck on the rocket pad.

What is skeleton mode?

With the In Plain Sight GobbleGum equipped, activate the three hidden skull targets and ordinary zombies are replaced by skeletons for the rest of the match.

Visual guides & sources

Screenshots and exact part locations live in these — open one on a second screen.

Map discussion

A shared community board for Der Eisendrache — posts are public, saved on the server and visible to everyone across devices. Handy for strategies, spawn variations you've noticed, or steps to double-check. Please keep it civil and on-topic.

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Part of the Zombies Easter Egg Codex — step-by-step Call of Duty Zombies Easter egg guides for every map. Open Der Eisendrache in the interactive codex for the solvers and map discussion.