Love and War

Before anything else can begin, you must turn on the power and activate the map's AI.

• The power switch is located in the Dragon Command building. Flip it to restore power to the entire facility and bring S.O.P.H.I.A. (Dr. Maxis's AI) online.
• Once power is on, interact with the green button in front of S.O.P.H.I.A. — this is mandatory to progress the main easter egg later. Do not skip it.

The map is divided into six main zones: Belinski Square (spawn), Department Store, Infirmary, Armory, Tank Factory, Supply Depot, and Dragon Command. Familiarise yourself with the layout early.

Unlocking Pack-a-Punch in Gorod Krovi requires collecting Network Circuits from Groph Pods and installing them underground.

Step 1 — Collect colour-coded cylinders from zombies:

• After activating power, zombies will begin dropping colour-coded cylinders (Blue, Yellow, or Red) at random. Pick them up.

Step 2 — Decrypt them at the matching machines:

• Blue cylinder → machine in the Dragon Command room
• Yellow cylinder → machine in the Supply Depot
• Red cylinder → machine in the Tank Factory
• Placing a cylinder launches a Groph Pod somewhere on the map — find it by looking for the green ray of light in the sky.

Step 3 — Defend the Groph Pod:

• Reach the pod and kill approximately 20 zombies near it. It will open and reveal a Network Circuit — pick it up.
• Repeat this process until you have collected all three Network Circuits (one per colour).

Step 4 — Install the circuits & ride the dragon:

• Take all three circuits to the bunker underground and install them in the designated slots.
• Three Dragon Control Networks now become active (located near each decryption machine). Pay 500 points at any of them to call a dragon and ride it to the Hatchery — the Pack-a-Punch area.
• To leave the Hatchery, go downstairs and jump into the sewers.

The Gauntlet of Siegfried is the map's specialist weapon — a baby dragon that can be used as a flamethrower or launched at zombies. It is required for the main easter egg. Progress through six challenges tracked at your personal tomb in Belinski Square.

Challenge 1 — Get the Dragon Egg:

• In the Hatchery (PaP area), look upward from near the sewer exit — there is a large green egg hanging above. Shoot it down, wait a few seconds, then pick it up.

Challenge 2 — Warm the Egg:

• Place the egg on one of the four nests around the map (near the Infirmary, Armory, in front of the power building, or near the Belinski Square tombs). Wait for a dragon to breathe fire over the nest, or throw a Dragon Strike Controller on it to heat the egg.
• Once warmed, complete a full round while away from the nest, then return to pick the egg up.

Challenge 3 — Kill ~15 Napalm Zombies:

• Head to an area where a dragon regularly fires at the ground and kill approximately 15 burning zombies. Check progression via the Tab menu — the ring around your egg icon will grow.

Challenge 4 — Kill Multiple Zombies with a Single Bullet:

• Use a penetrating weapon (Drakon, SVG sniper, or wait for an Insta-Kill power-up) to kill multiple zombies with one shot, repeated several times.

Challenge 5 — Melee Kill Zombies:

• Kill approximately 15 zombies using melee — the Dragon Shield bash, Bowie Knife, or default knife all count.

Challenge 6 — Incubate the Egg:

• Return to the Hatchery and place the egg in the incubator underground (near the PaP machine). A lockdown begins — kill zombies to charge the egg until the lockdown ends. Finish the round, then pick the egg back up.
• Return to your tomb in Belinski Square and interact with it to claim the Gauntlet of Siegfried.

The Dragon Strike Controller is a grenade-like device that calls a dragon air strike at the target location, attracting and burning all nearby zombies. It is required for several easter egg steps.

• Head to the Hatchery (Pack-a-Punch area). There is a console up the stairs — every player in the game must interact with it within 10 seconds of each other.
• This triggers a 4-wave lockdown inside the building. Zombies, Manglers, and Valkyrie drones attack through windows — in the first three waves only one window opens at a time, but all sides open simultaneously in the final wave.
• Tip: Heading upstairs and holding a corner or camping near the Gobblegum machine makes the lockdown much more manageable. A Ray Gun Mark III is especially effective here.
• After surviving all four waves, return to the console and pick up the Dragon Strike Controller.

The upgraded Dragon Strike stores 2 charges instead of one and deals more damage. This is recommended before the main quest's harder steps.

Step 1 — Get 40 kills with the Dragon Strike:

• Use the Dragon Strike Controller against zombies until you reach 40 kills total. A loud dragon roar will confirm completion.

Step 2 — Hit flags with the Dragon Strike:

• Strike a number of flags located outside the playable map boundaries with the Dragon Strike — the count depends on the number of players (1 flag solo, 2 for two players, etc.).
• Flag locations (aim from inside the map toward the edges):
  • Near Quick Revive in the spawn area
  • Visible from the Tank Factory
  • Visible from Dragon Command
  • Visible from the Supply Depot

Step 3 — Repeat the Hatchery lockdown:

• Return to the Hatchery console and trigger the lockdown again. You must use the Dragon Strike Controller at least once during each wave, or the upgrade will not progress and you will have to restart.
• After all waves are cleared, pick up the Upgraded Dragon Strike Controller from the console.

The first major main quest step requires collecting 6 trophies hidden across the map using various methods. Note: Steps 6, 7, 8, and 9 are independent of each other and can be completed in any order.

1. Dragon Command sculpture: A statue on the building facade in front of the power has a trophy in its hand. Shoot the trophy — it will fall to the ground for you to pick up.
2. PaP sewer tunnel: Ride the dragon to the Hatchery. While being ejected through the sewer tunnel on exit, shoot the red glowing light on the ceiling above you. The trophy will appear in the toilets inside the PaP building.
3. Operation Bunker safe: In the underground Operation Bunker (between Infirmary and Armory), find the safe near the Fafnir Shield crafting bench. Smash it open with the Gauntlet of Siegfried's melee punch, then pick up the trophy inside.
4. Supply Depot water hole: Outside the Supply Depot there is a hole filled with water. Throw a Dragon Strike Controller into the hole — the trophy will float up and become collectible.
5. Giant robot laser (Supply Depot): Activate the giant robot's laser in the Supply Depot area. The trophy will appear in the hole where the laser beam struck.
6. Tank Factory pipe: Near the Double Tap perk in the Tank Factory, there is a pipe on the wall. Shoot it with the Fafnir Shield's fire blast — the trophy will drop out.

A generator in the Hatchery (near the egg incubator) must be activated and kept running throughout the valve puzzle step.

• To power the generator, you must destroy or lure a Valkyrie drone to explode near it. Either kill the drone close to the generator, or bait it into shooting the generator directly.
• Once powered, interact with the generator — a flow of air will be visible.

⚠️ Important: The generator only stays active for 5 minutes. You can reactivate it by pressing the action button on it, but only once per round. Plan the valve puzzle step around this timer and keep an eye on it.

Six air valves are spread across the map. Each has a number display (settable to 1, 2, or 3) and a coloured light (blue = receiving air, white = not receiving air, green = end point). The goal is to trace a connected air path from the green-lit valve (the source) to the valve containing a stuck cylinder code (the destination).

Valve locations:

• Dragon Command — upstairs, turn right
• Armory — beside the 500-point bridge
• Supply Depot — under the stairs near a mystery box spot
• Infirmary — beside beds while descending the building
• Tank Factory — facing metal stairways
• Department Store — top floor

Inspect all valves to identify which one holds the stuck cylinder (destination) and which one has the green light (source). The other valves will be white or blue.

Solving the puzzle: Manually working out the correct number for each valve is complex. The community tool at kronorium.com/tools/airvalves will calculate the correct solution for you — input which valve has the green light and which has the cylinder, and it outputs the correct number for every valve.

• Set each valve to the number the tool specifies.
• When the path is correctly connected, pick up the cylinder code from the destination valve.

With the cylinder code retrieved from the valve puzzle, take it to S.O.P.H.I.A. in the Dragon Command room.

• To the left of S.O.P.H.I.A.'s main screen are 6 small letter cylinders. Each one cycles through letters when shot.
• Shoot each cylinder until it displays the correct letter to spell out: K — R — O — N — O — S
• Once all six letters are set, interact with S.O.P.H.I.A. to confirm the password entry.

Tip: Shoot carefully — each shot advances the letter one position. Count the clicks if needed to avoid overshooting.

Head to S.O.P.H.I.A.'s room and place all 6 trophies on the desk beneath the green display screen in front of her.

Interact with the command console (same desk) to trigger a randomly selected challenge. You will have a timer and zombies will respawn endlessly throughout — be prepared. There are 5 possible challenges:

• Bomb Defusing: Defuse 6 bombs (3 in solo) in the correct order within 2 minutes. The order is shown briefly on the display screen above the trophies — watch carefully and write it down, as the order flashes slow after a rapid scramble and will not repeat. Bomb locations: Department Store (under stairs), between Infirmary and Operation Bunker (on a pillar), Dragon Command (upper floor), Supply Depot (beside a city map), Tank Factory (near WunderFizz), Armory (downstairs near WunderFizz). Split memorization between players in co-op.
• Yellow Orb (Gersh): A yellow orb (the soul of Gersh) wanders the map. Shoot it repeatedly with a Pack-a-Punched weapon — it will pause briefly to speak, then move. Keep shooting it across the map until it reaches Dragon Command. Approach it there to trap it in a white flash that clears all zombies momentarily.
• Friendly Mangler Escort: A Mangler with green eyes will appear in a highlighted area (shown on the control screen). One player must lure it to the Dragon Command room, into the corner to the right of the trophies. You can shoot off its arm cannon to speed it up — but do not kill it.
• Friendly Valkyrie Drone Escort: A friendly Valkyrie drone must be escorted to Dragon Command. At least one player must stay near it at all times for it to move forward. Keep pace with it until it reaches the destination.
• Groph Pod Defence: A Groph Pod lands outside the map near one of the three dragon riding stations (look for the green ray). Protect it from zombies until it opens. Then send the Siegfried Gauntlet's baby dragon toward the pod to retrieve the part inside. Return the part to S.O.P.H.I.A.

Recommended Gobblegums: Undead Man Walking (slows zombies), Crawl Space, or Plain Sight — all useful for surviving the zombie pressure during any of the challenges.

This is always the final sub-step that follows the random challenge. It occurs in the same session.

• After the random challenge completes, pick up the card that appears in front of the trophy desk.
• Carry it to the Hatchery (Pack-a-Punch area) and insert it into the red computer.
• A lockdown begins — Manglers will spawn and attack. You must survive for approximately 2 minutes until the download completes.
• Once finished, pick the card back up from the computer.

Recommended: Have a Pack-a-Punched NX Shadowclaw — its shots instantly revive downed teammates, which can be lifesaving during this Mangler-heavy lockdown.

With the downloaded card in hand, return to S.O.P.H.I.A. and give it to her. After a brief exchange, she will hand over the Power Core.

• Head to Belinski Square (the spawn area). Nikolai 1.0's giant mech is visible in the neighbourhood, powered down.
• Aim the Gauntlet of Siegfried at the mech and send the baby dragon to deliver the Power Core to it. The mech will power up.

⚠️ This is the point of no return. The boss fight begins shortly after. Make sure every player is fully equipped before proceeding:

• Pack-a-Punched weapons (Ray Gun Mark III is the strongest option for this fight)
• Full perks — Juggernog, Quick Revive at minimum
• Fresh Fafnir Shield (blocks dragon fire damage)
• Full Gobblegum selection (Afterlife, Phoenix Up, Danger Closest, Perkaholic)
• Full ammo on all weapons

All players must stand on the grid where S.O.P.H.I.A. was seated in Dragon Command. It will open, and the players will be launched through the sewers into a new arena where the boss fight takes place. Interact with the button in the center of the arena to begin.

Phase 1: Fight the dragon alongside Nikolai's mech.

• Infinite zombies spawn continuously. The dragon will periodically breathe fire across the arena — the edges of the arena are always fire-free, use these safe zones to survive and still shoot the dragon.
• Wait for Nikolai's mech to fire at the dragon, revealing a glowing orange wound on its body. Shoot everything you have at the wound until it closes.
• Wounds will appear on three locations in sequence: the wing, the belly, and the neck.
• Weapon advice: The Ray Gun Mark III deals massive damage to the boss — it is by far the most effective weapon available. Use the Gauntlet of Siegfried / Dragon Strike only for crowd control against regular zombies.

After enough damage is dealt to all three wound locations, the dragon is defeated. A cutscene will play.

After the dragon is slain, the fight transitions to Nikolai 1.0 in his giant mech.

Nikolai's attacks:

• Chain gun — fires rapidly and deals extreme damage. This is the most dangerous attack. Never stand directly in front of the mech.
• Electric harpoon — a targeted electrical attack
• RAP (robot) launches — deploys smaller robotic units into the arena

How to damage the mech:

• Shoot the yellow glowing lights on the robot's body — they are the weak points. The critical final target is the glowing yellow light beneath the pilot seat.
• As with the dragon phase, the Ray Gun Mark III is extremely effective — a handful of shots can deal the same damage as multiple clips of a PaP'd automatic weapon.
• Keep moving constantly to avoid the chain gun, attack weak spots during openings, and use the Gauntlet of Siegfried to manage the ongoing zombie horde.

After enough damage is dealt to all weak points, Nikolai's mech is destroyed. The victory cutscene plays, followed by a speech from Dr. Monty.

🎉 Congratulations — the Gorod Krovi main easter egg is complete! All players receive all 9 perks as a reward.