Gorod Krovi
An alternate-history Stalingrad overrun by Group 935's dragons and robots. In Love and War, command a dragon whelp on your arm, ride dragons between districts, and confront the original Nikolai in his mech.
Key areas
Belinski Square (spawn)
The challenge tombstone and the dead dragon used in shield and song steps.
Dragon Command
Power switch, S.O.P.H.I.A., the Groph terminals and a dragon-summon pad.
Department Store
Juggernog building; upper floor holds song items and cosmetic mannequins.
Tank Factory
Giant-robot foundry with Double Tap; Mangler and valve steps here.
Supply Depot
Multi-level depot with Groph cylinders, trophies and a song item.
Hatchery (PaP)
Reached only by riding a dragon — Pack-a-Punch, the egg and the valve puzzle.
Steps at a glance
- Turn on power (Dragon Command)
- Build the Guard of Fafnir (Dragon Shield)
- Repair the Dragon Network → Pack-a-Punch
- Ride a dragon; earn the Dragon Strike Controller
- Egg → warm → 3 trials → Gauntlet of Siegfried
- Collect the 6 trophies
- Solve the air-valve pipe puzzle
- Enter the code KRONOS
- Complete the 5 S.O.P.H.I.A. trials
- Mangler lockdown → red keycard
- Deliver the Power Core to Nikolai's mech
- Boss: Mother Dragon, then Nikolai 1.0
Full walkthrough
Power on
Flip the wall switch by the interior stairs. This boots S.O.P.H.I.A. and the Groph terminals — zombies now drop Code Cylinders.
Build the Dragon Shield
Grab three parts from those zones and craft the Guard of Fafnir at the Operations Bunker workbench. It blocks attacks and has a green fireball (later upgradable to Tiamat's Maw).
Repair the Dragon Network → PaP
Collect the Code Cylinders in their fixed drop order — Blue (Dragon Command), Yellow (Supply Depot), Red (Tank Factory) — and insert each into that area's Groph Module. Each insert launches a Groph Pod that lands at a random spot marked by a green beam in the sky; get to it and defend it (~15 kills nearby) until it opens and yields a part. The three parts assemble the Dragon Network Controller at the Operations Bunker console, letting you summon a dragon (500 pts) and ride it to the Hatchery.
Hatchery lockdown → Dragon Strike & PaP
Upstairs in the Hatchery, all present players interact with the Dragon Strike console to start a four-wave lockdown (use the pillars for cover and kill Manglers early). Clear it to take the Dragon Strike Controller; Pack-a-Punch then opens on the Hatchery's lower level. Take a sewer exit back to the city.
Egg → Gauntlet of Siegfried
Shoot the green dragon egg above the basement grate so it drops, carry it to the Dragon Command nest and warm it with dragon fire or the Dragon Strike. Wait a round, then do three egg trials (napalm kills, single-shot penetration multi-kills, melee kills), charge it at the basement Incubator, and return the cooled egg to the spawn tombstone to claim the Gauntlet of Siegfried.
Collect the 6 trophies
Knock loose six trophies and place them in the six sockets under the trial monitor in Dragon Command (placement order doesn't matter):
- Gersh — shoot the raised statue hand on the building across from Dragon Command; the trophy falls below
- Group 935 — during the sewer ejection from the Hatchery, shoot the red light, then collect it from the Hatchery toilet
- Groph Pod — launch the Gauntlet's whelp (Welp) ability at the locked Operations Bunker safe, then heavy-melee it with the Gauntlet to open it
- Nuke — Dragon Strike the marked puddle outside Supply Depot
- Mangler — fire the giant laser trap inside Supply Depot to blast the wall, then take it from the hole
- Valkyrie — shoot the LEFT of the two windows beside Double Tap with the Guard of Fafnir's fireball; it hits the pipe behind and ejects the trophy next to the perk
Air-valve pipe puzzle
Kill a Valkyrie Drone by the basement generator to power it — this starts a 5-minute countdown; if you don't finish in time the generator shuts off and must be re-triggered at the Hatchery. Two things are randomised each match: the green-lit valve (the airflow start) and the whistling valve holding a pink code cylinder. Set every other valve to route the airflow correctly through the pipes, which releases the pink cylinder — then carry it back to S.O.P.H.I.A. at Dragon Command.
Helper: Valve route solver
Gorod Krovi Valve Route Planner
Gorod Krovi — six valve chambersBoth the green-lit start valve and the whistling valve holding the pink code cylinder are randomised each match. Mark those two, then work the other four — tick each valve as you set it and the planner confirms when the route is complete and the cylinder should release.
Enter KRONOS
Insert the pink Master Code Cylinder from the valve puzzle, then shoot the letters K-R-O-N-O-S on the letter wheel left of S.O.P.H.I.A., top to bottom. A wrong entry locks you out until the next round. The opposite terminal now shows all six trophies.
The 5 S.O.P.H.I.A. trials
Complete five trials in random order: escort a green-eyed Valkyrie and a green-eyed Mangler to the pad, defend a Groph pod, shoot a yellow orb three times, and defuse six bombs in ~2 minutes.
Mangler lockdown → keycard
Take the red keycard from the map terminal to the basement's red computer to trigger a Mangler lockdown; survive and reclaim the keycard.
Deliver the Power Core
Use the keycard on S.O.P.H.I.A. for the Power Core, then send the Gauntlet whelp to carry it to Nikolai's giant mech outside spawn. S.O.P.H.I.A. opens the red-starred sewer grate.
Boss: Mother Dragon & Nikolai
In the pit, survive until Nikolai stuns the Mother Dragon and exposes her bright orange weak points (wings, chest/belly and neck) — burst each while it glows. With the dragon dead, turn on Nikolai 1.0 and destroy the yellow power cores on his shoulders, arms, chest and cockpit to finish him.
Side Easter Eggs & extras
Everything beyond the main quest. Tap any entry to open the full how-and-where breakdown.
“Dead Ended”
Kevin Sherwood ft. Clark S. Nova. Hold Use on 3 vodka bottles: Department Store first floor (on a couch), Operations Bunker (among burning crates by the Network machine), and the Supply Depot 1500-point room (on a shelf).
- Hold Use on 3 vodka bottles, in any order
- Department Store — first floor just outside spawn, on a couch
- Operations Bunker — among the burning wooden crates by the Dragon Network machine
- Supply Depot — inside the 1500-point first-floor room, on a shelf by a medical box
- 'Dead Ended' by Kevin Sherwood & Clark S. Nova plays
“Ace of Spades”
Motörhead (licensed). Interact with 3 playing cards: the Tank Factory chalkboard by Double Tap, S.O.P.H.I.A.'s desk in Dragon Command, and next to Pack-a-Punch in the Hatchery.
- Interact with 3 playing cards, in any order
- Tank/War Factory — on the chalkboard near Double Tap
- Dragon Command — on S.O.P.H.I.A.'s desk
- Hatchery — next to the Pack-a-Punch machine
- 'Ace of Spades' by Motörhead plays
“Samantha's Sorrow”
Buy Monkey Bombs, then throw one into 3 separate patches of dragon fire; a Samantha doll appears at the spawn tombstone to start a hide-and-seek doll hunt.
- Get Monkey Bombs from the Mystery Box
- Throw a Monkey Bomb into the AI dragon's ground fire at Dragon Command, Supply Depot and the Tank/War Factory
- Go to spawn (Belinski Square) — a Samantha doll appears by the tombstone; interact to start the hunt
- Five dolls hide one at a time, each playing the lullaby to locate it — shoot each within the time limit
- Complete all five for a Max Ammo and the song (too slow and Samantha resets it)
Guard of Fafnir → Tiamat's Maw
The buildable Dragon Shield — upgrade it with ~30–50 fire kills and by burning three purple symbols with its fireball.
- Build from three parts (each in a fixed zone, rotating spots): Jugger-Nog/Department Store, Infirmary/Stamin-Up, and the Armory area
- Craft at the Operations Bunker table — its melee is a green fireball that blocks dragon fire
- Tiamat's Maw: get 30 fireball kills
- Shoot three purple symbols with the fireball (Dragon Command staircase, Supply Depot broken roof, the Giant Robot's shoulder at Tank Factory)
- Stand in dragon fire with the shield ~10-20s for immunity, then dip it in the dead dragon at Belinski Square for Tiamat's Maw (red fireballs, tougher)
GKZ-45 Mk3 → Maelstrom of Eris
A separate Mystery Box Wonder Weapon (dual GKZ-45 + Ray Gun Mk III) — shoot the slow-cloud with the right gun for a black hole; PaP into Maelstrom of Eris.
- The GKZ-45 Mk3 comes only from the Mystery Box (no build)
- It's dual-wield: the left gun fires a yellow slowing cloud, the right is a piercing Ray Gun Mk III
- Shoot a yellow cloud with the right-hand gun to make a black hole (one-shot kills to ~round 29)
- Pack-a-Punch it in the dragon-ride rooftop PaP room for the Maelstrom of Eris (about double ammo, longer, stronger)
Dragon riding
After three Network Circuits, pay 500 to summon and ride a dragon to the Hatchery and Pack-a-Punch.
- Charge the three Groph Module pods (Dragon Command, Supply Depot, Tank/War Factory) with kills and take each Network Circuit
- Insert all three into the Dragon Control Network terminal in the Operations Bunker's underground
- Activate a Dragon Summoning console at a station (the main one is at Dragon Command's U-shaped catwalks)
- When the dragon lands, approach its neck and interact to mount (up to four riding stations)
- It flies to a building — drop through the rooftop hole into the Pack-a-Punch room (PaP costs 2,500)
Widow's Wine challenge
Complete the Tier-3 challenge on the right of the spawn tombstone for a free Widow's Wine (also via Der Wunderfizz).
- Go to the Trial/challenge tombstone in Belinski Square (spawn)
- Work through the Trial tiers — the reward is tied to the Tier 3 (right-side) challenge
- Completing Tier 3 grants an extra perk slot plus a free random perk (a common way to get Widow's Wine here)
- (The exact Tier 3 task may be randomised; it's also available from Der Wunderfizz)
Upgraded Dragon Strike
Rack up ~40 Dragon Strike kills, hit the flags around Spawn/Quick Revive, Tank Factory, Dragon Command and Supply Depot (count scales with players), then redo a Hatchery lockdown using Dragon Strike each wave.
Dragon Wings
Build the Gauntlet and ride from all three dragon stations, then claim the wings from the Department Store top-floor mannequin — fire/explosive resistance and free dragon travel.
Mangler & Valkyrie Helmets
Finish the Mangler-kill requirements (including destroying helmets/arm cannons) and the Valkyrie-drone requirements, then claim each helmet from the Department Store mannequins for extra resistance.
Time-trial melee weapons
Beat the time board's marks — round 5 before 5:00 (Wrench), round 10 before 13:00 (Malice), round 15 before 24:00 (Slash N Burn), round 20 before 32:00 (Fury's Song) — and claim from the time-trial board.
Upgraded Monkey Bombs
Complete the pot/candle interaction, earn the required Monkey Bomb kills, then throw a charged Monkey at the matching tomb.
Interactive solvers
Every solver for Gorod Krovi, in the order you meet them. Each also appears inside its step in the walkthrough above — use whichever is handier. Browse every Zombies solver →
Gorod Krovi Valve Route Planner
Gorod Krovi — six valve chambersBoth the green-lit start valve and the whistling valve holding the pink code cylinder are randomised each match. Mark those two, then work the other four — tick each valve as you set it and the planner confirms when the route is complete and the cylinder should release.
Recommended loadouts
Three strong picks for this map — the map's Wonder Weapon plus reliable box/wall options. These are pre-augment-era games, so the setup is the gun plus Pack-a-Punch and perk synergy.
Gauntlet of Siegfried
Training & panicThe dragon-whelp Wonder Weapon — flamethrower for hordes, sentry alt-fire and a 115 punch. Pair with Widow's Wine and Quick Revive.
KN-44 → Bloodletter (PaP)
Reliable workhorseAccurate with a big ammo pool; run Speed Cola + Double Tap II and Fast and Furious GobbleGums to stay topped up.
GKZ-45 Mk3 → Maelstrom of Eris
High-round crowd controlBox wonder weapon — the slow-cloud plus black-hole combo clears trains. Best held for high rounds; run Stamin-Up and Electric Cherry.
Recommended kit & gum picks
Gorod Krovi predates Field Upgrades and Ammo Mods — consumables are GobbleGums; the Gauntlet of Siegfried, GKZ-45 Mk3 and Dragon Shield are your kit (in Recommended loadouts). Rideable dragons cover the timed steps.
Frag / Semtex Grenade
Clears the Mangler lockdown and the S.O.P.H.I.A. trial crowds.
Monkey Bomb
Peels enemies during the valve puzzle and the KRONOS code entry.
Alternate Ammo Type
PaP the KN-44/Bloodletter for a random AAT — Dead Wire and Fire Works handle the Mangler and Valkyrie adds.
Perkaholic
Ultra-RareEvery perk at once.
Aftertaste
MegaKeep your perks after a revive (3 rounds).
Wall Power
Rare MegaNext wall-buy comes Pack-a-Punched.
Kill Joy
Rare MegaInsta-Kill (2×) to reset the Mother Dragon phase if it turns.
Alchemical Antithesis
ClassicEvery 10 points = 1 reserve ammo — refills the Gauntlet of Siegfried.
Perkaholic
Ultra-RareFull perks for whoever pops it.
Phoenix Up
MegaRevive all downed team-mates, perks kept — key for the Nikolai mech fight.
Near Death Experience
Ultra-RareProximity revive during the boss phases.
Aftertaste
MegaKeep perks through a down.
On the House
Rare MegaFree Random Perk bottle for the squad.
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
ClassicFaster ADS walk and raise/lower for 3 rounds.
Arms Grace
ClassicRespawn with the guns you bled out with.
Coagulant
ClassicLonger bleedout time.
In Plain Sight
ClassicZombies ignore you (2×, 10s each).
Stock Option
ClassicAmmo drawn from your stockpile, not the magazine (2:30).
Impatient
ClassicRespawn near the end of the current round.
Sword Flay
ClassicMelee does 5× damage (2:30).
Anywhere But Here!
ClassicTeleport to a random location with a concussive blast (2×).
Danger Closest
ClassicZero explosive self-damage for 3 rounds.
Armamental Accomplishment
ClassicFaster weapon switch, melee and item use for 3 rounds.
Firing On All Cylinders
ClassicFire while sprinting for 3 rounds.
Arsenal Accelerator
ClassicCharge your special weapon faster for 10 min.
Lucky Crit
ClassicBetter Alternate Ammo Type proc for 1 round.
Now You See Me
ClassicAll zombies chase only you (2×, 10s).
Alchemical Antithesis
ClassicEvery 10 points earned becomes 1 reserve ammo (2×, 60s).
Projectile Vomiting · Newtonian Negation · Eye Candy · Tone Death
Classic (Whimsical)4 cosmetic-only DLC classics.
Aftertaste
MegaKeep perks on revive (3 rounds).
Burned Out
MegaYour next hit ignites nearby zombies (2 hits).
Dead of Nuclear Winter
MegaSpawns a Nuke (2×).
Ephemeral Enhancement
MegaHeld gun becomes Pack-a-Punched for 60s (2×).
I'm Feeling Lucky
MegaDrops a random power-up (2×).
Immolation Liquidation
MegaDrops a Fire Sale (3×).
Licensed Contractor
MegaDrops a Carpenter (3×).
Phoenix Up
MegaRevive all team-mates with perks.
Pop Shocks
MegaMelee electrocutes (5×).
Respin Cycle
MegaRe-spin the Mystery Box (2×).
Unquenchable
MegaAn extra perk slot when at 4.
Who's Keeping Score?
MegaDrops Double Points (2×).
Idle Eyes · Flavor Hexed · Board Games · Board To Death · +8 more
Mega12 further Megas incl. Crawl Space, Fatal Contraption, Unbearable, Disorderly Combat, Slaughter Slide, Mind Blown (DLC/Chronicles).
Cache Back
Rare MegaDrops a Max Ammo.
Kill Joy
Rare MegaDrops an Insta-Kill (2×).
On the House
Rare MegaDrops a Random Perk Bottle.
Wall Power
Rare MegaYour next wall-buy comes Pack-a-Punched.
Undead Man Walking · Fear in Headlights · Temporal Gift · Crate Power · Bullet Boost · Extra Credit · Soda Fountain
Rare Mega7 further Rare Megas (DLC/Chronicles).
Killing Time
Ultra-RareFreeze all zombies for 20s; shot ones die.
Perkaholic
Ultra-RareEvery perk on the map.
Near Death Experience
Ultra-RareProximity revive with perks (3 rounds).
Reign Drops
Ultra-RareAll core power-ups at once (2×).
Shopping Free · Round Robbin' · Head Drama · Secret Shopper · Profit Sharing · Self Medication · Power Vacuum
Ultra-Rare7 further Ultra-Rares (DLC/Chronicles).
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
Dark OpsComplete all the Zombies story quests.
Prestigious Protagonist
PrestigeEnter Prestige after reaching Deresurrectionist (Zombies rank Lv 35).
Visual guides & sources
Screenshots and exact part locations live in these — open one on a second screen.