Easter Egg guide

-open the door of the building in the spawn area
-climb the ladders to the roof of that building and get close to the radio
-in the center of the map there is an electric pole with a generator on it, if it has electric sparks it can be shot down
-the generator on the ground has an electric field that ends shortly after the beginning of the next round
-once the electric field is gone you can pick up the generator and carry it to the roof where the radio is
-connect the generator and call in the chopper [10000 points]
-a countdown will start and time totems spawn around the map, activate all of them to speed up the countdown
-after destroying all the totems you get a final countdown at the end of which the chopper will arrive
-get to the chopper and interact with it to enter
-in the chopper you can equip an RPG and shoot the target to end the game

Mechanics guide

MELEE ATTACKS
-only your handgun can stun zombies (1 head shot or 2 body shots)
-when stunned, the zombie goes into an animation and you can interact with it
-your controls are locked while you are in the animation but you are also invulnerable
-if there are zombies around you they also die along with the main target
-each time you perform a melee attack it's a random animation (some are character specific)
-killing a zombie in this way grants you bonus points based on your combo multiplier

COMBO COUNTER
-it is increased by melee attacks (only the special ones, using your knife doesn't count)
-you have a limited amount of time before the combo fades and resets
-killing a zombie in any way keeps the combo up but only melee attacks increase its value
-hitting the boss with a melee attack keeps the combo up even if you don't kill it

DBNO STATE
-when your health gets to 0 you enter an invulnerable state in which you can move slowly and shoot
-if you have a blue spray you can use it to self revive
-if an ally has a blue spray they can use it to revive you
-if you don't get revived within 30 seconds you die and respawn the following round

KILLING THE BOSS
-the boss can only be killed with melee attacks but weapons can damage it
-after enough damage it gets stunned similarly to the zombies
-you need to hit the boss with 4 melee attacks to kill it
-if you shoot it with upgraded weapons it only takes 2 melee hits instead
-the boss respawns after a while

AMMO AND SPRAY DROP
-killing zombies has a chance of dropping an ammo box
-picking up a box gives you a random amount of ammo for your equipped weapon
-sprays are only dropped by the boss

RED AND BLUE SPRAY
-the red spray works like Juggernog
-the blue spray works like a quick revive in solo but it's necessary to revive an ally in coop
-while picking up or using the spray you are stuck in place but you are invulnerable

CRATE WEAPONS
-you have a 2 weapons limit and you can't replace the starting pistol but you can always replace the other weapon
-when you unlock the briefcase you can upgrade your weapons to a more powerful version


Upgrade weapons

-there are 6 silver emblems around the map that you need to shoot
1 on each of the water tanks
1 behind the billboard on the roof with the radio
1 down in the sewer area behind bars
1 below the roof of the building that you find on your right climbing the vertical ladder from the sewers
1 inside the small shed above the sewers
-shooting all of them activates the briefcase in the market area
-only the shotgun, the magnum, the scoped pistol and the mp5 can be upgraded