Gorod Krovi:
Easter Egg

The steps

1. Power the generator: in the Hatchery basement, a generator sits under a green and black tarp next to the incubators. Lure a Valkyrie Drone to it and destroy the drone there. Shooting off its three arms makes it charge the player standing by the generator. The tarp flutters and a hum starts: five minutes begin. While in the Hatchery, take the Dragon Egg from the rafters above the sewer.
2. Turn the valves: six pneumatic tubes are spread around the map, in Dragon Command, the Infirmary, the Tank Factory, the Armory, the third floor of the Department Store and the Supply Depot. One of them whistles from the start of the game and holds the Master Code Cylinder; leave it alone. Set the others so that air flows from the green one through every blue one and pushes the cylinder out. The order changes each game. If the five minutes run out, a button by the generator restarts it, with the same layout.
3. Crack the code: place the Master Code Cylinder in S.O.P.H.I.A., then shoot the sides of the letter wheels on her left to spell KRONOS from top to bottom, and press the button. A wrong code locks the wheels until the next round.
4. Six silver trophies: collect six hidden trophies and place them under the large screen opposite S.O.P.H.I.A.
5. S.O.P.H.I.A.’s six tasks: press the button under the screen to start each task. The first five come in a random order, the sixth is always last. A failed task can be tried again the next round, and no task starts on a Valkyrie round.
6. Free the original Nikolai: S.O.P.H.I.A. gives a power core. In Belinski Square, send the whelp of the Gauntlet toward Nikolai’s buried mech, from just left of the derailed train, to deliver it. Back in Dragon Command, S.O.P.H.I.A. leaves her machine and flies off, uncovering a grate. All players stand on it and slide through a sewer to a round arena behind Belinski Square.
7. The boss fight: press the button in the middle ring. A Gigant robot fires its beam at a pile of debris and frees Nikolai’s mech.

The six trophies

The six tasks

The boss fight

Zombies, Manglers and Valkyrie Drones keep coming during the whole fight, and a Max Ammo waits by the console until it is used. Stay near the edges of the arena and in the trenches, where the fire does not reach.

1. The dragon: the original Nikolai fights with the players. When the dragon lands and its fire dies down, his electric harpoon shows a weak spot: the right wing, then the left side of the belly, then the neck. After the first spot, the dragon also throws fireballs.
2. The original Nikolai: once the dragon is dead, he turns on the crew. The arena grows, opening buildings and upper floors for cover. Shoot the two yellow lights on the torso of his mech and the two yellow cores that rise from its shoulders, then the fifth core revealed between the legs. Hide from his minigun, keep away from his explosive shots, and run when embers circle the screen.

Rewards

The closing cutscene shows the crew’s Nikolai shooting his older self. Richtofen takes the soul, the last one Maxis needs, and the screen reads “To be concluded…”. The game then resumes in Belinski Square. Every player gets every perk of the map with no perk limit, and the perks stay after being downed, except Quick Revive in solo. The achievement Love and War unlocks with 7500 XP. All players except Richtofen hear Dr. Monty speak about the House, the setting of Revelations. The dragon that burns the map is the one killed in the fight, so the fire stops for the rest of the game.