There will be directions on screen!

Turn the power on by getting to the switch underground and interact. Then you have to kill two Tempests in order to get two fuses. Place them next to the Power Switch an turn the switch on by interacting with it!

Again there will be directions on screen!

Unlock the Pack a Punch by interacting with it. After this there will spawn a Disciple. Kill all the enemies and the Disciple wich are spawning.

Punch you weapon with Brain Rot and go to Hotel Room 305. Shoot a Zombie with Brain Rot in Room 305 and he will open the door with the wooden planks over it. Go in and collect the zombies’hands!

Notice the safe, this a guaranteed WONDERWEAPON!

After done the first step you have to move to Checkpoint Charlie. Dig up the depris piles either side of the road until you get a microwave dish. You can put this on the Upgrade station in the garment factory for later.

Now you have to play until round 10. On this round there will spawn a KraznySoldat. Kill it to get the battery.

After done these 3 steps go to the underground to the Safe House and interact with Klaus.

Activate Klaus by using the yellow radio on the desk. Take him to the switch room and activate your tactivcal to command him to stand next to the locker. Klaus will open it. Pick up the Flashlight inside.

Now you need to find three numbers. The first number is found in the Garment Factory. The second one you can find in the Service Passage. The third number is found in the Grocery Store.

Once you got all digits go back to Hotel Room 305 where you grabbed Klaus’hands and interact with the safe. Turn the dials to correspond with the numbers you found. The first goes on the left, the second in the middle and the third on the right. If you have done it correctly you can open the Safe and picking up the Cerberus.

The zombies will not attack you while you are using the dials.

If Klaus isn’t activated now, wait until you can call him again by using the yellow radios. Once you have him make him go to the Sewer (if you’re on the street, head towards the trials machine, then turn left just before it and go down the zip line. This will take  you right near it.). Place him inforn of the wall at the end, past the rappel. 

You can also find it by looking at your mini-map. When you’re at the right wall, it will look like there’s a room behind it.

After Klaus arrived at the location you called him, he will automatically smash the Wall for you.

Use the Wonderweapon to kill zombies until one drops the laser upgrade or also called “Blazer Mod”. Use this on the metal in the hole in the wall Klaus just made to melt your way through.

Enter the Room . After you entered for the first time will end the round.  Fight all the enemies spawning till you got the red crystal zombies. Once you get one kill all of them in the lab and you will unlock the two machines.

Move to the warhead and interact with it to get the 3 canisters.  You can grab all canisters at once.

Facing the Warhead with your back to the blue portal, move to the green box straight ahead on the right. Shoot it with the Cerberus and grab the Tempest Lure.

Grab the Tempest Lure You have to bring each canister to a Essence Collector (green glowing device) on the map. They will spawn in lots of different places (List of locations you will find below).

Put a canister in each one, then use a lure device near it. This will spawn 3 tempests. You have to kill them next to the Collectors.

Note: If you are playing with 2-4 people you will need to use more than one. Playing Solo you will only need one lure.

Once all tempests are killed the canisters will pop up, full. You must then carry it back to the warhead in the lab!

Note: You will have to repeat this step for all 3 canisters.

Locations of the Essence Collectors:

• Sewer Access
• Ghost Station
• East Berlin Street
• Near the Trials Machine
• Korber Rooftop
• Alley
• Destroyed Apartement Building

Call Klaus with the yellow radios like you did it in the beginning and let him kill a certain amount of Zombies.

Let him kill Zombies until the Upgrade Station in the Garment Factory has a green screen at the top. Tell Klaus to get in.

Now you must defend him for 1 Minute while he’s upgrading. This upgrade increases his strengh wich you need for the next step!

Also for a further step you will have to build the headgear.

First get the Cerberus and shoot the antenna on top of the building in Spawn with the Cerberus and grab the part.

Then move to the Ghost Station and shoot on the green metal box on the wall next to a long narrow sign. Also grab the part.

Now go to the Electronics Store and shoot the radios with the Cerberus. Grab the part.

After done these Steps go to Klaus and interact with him. Make sure not to spawn him. Now he will have the Headgear.

Take Klaus to the train tracks and tell him to stand on the side near the ticket booth. Then go into the switch room on the other side of the tracks and switch the tracks. Now a train will come and Klaus will stop it for a while.

Get on board and pick up Rico’s keycard and the Warhead.

Note: Do not mistake the Keycard for the intel next to it. You are free to pick up the intel but make sure you grab the Warhead and the Keycard.

Bring the keycard to the safe room (where you got Klaus) and use it on the PC. Keep interacting until it is ready to fire the satellite.

Note: It is necessarily that you have put the Headgear on Klaus. Otherwise you will be stuck.

Spawn Klaus and he will interact with it.

MAKE SURE YOU READ FIRST THE FULL GUIDE OF THIS STEP BEFORE MOVING ON! IF YOU FAIL, YOU WILL DIE!

At this Point you have to be sure you are as fully upgraded as possible. The next part will be time limited.

Interact with the Computer to activate the Satelite. There is also a computer above ground next to the trials machine in the green tent. We recommend to use this one!

The Satellite will fire outside at Checkpoint Charlie. You must now kill the enemies that spawn, including a Megaton, wich will drop two pieces of Uranium.

From this point you have 5 minutes to complete the next steps!

Take the Uranium to the Korber rooftop (If you are playing coop, make sure one your teammates will grab the second Uranium that has dropped). The second Uranium has to be carried to the rooftop opposite Korber. Place the Uranium on the zipline. Interact with the zipline and the Uranium will rush together.

After you picked up the Part the timer will end but the part will deal damage to you. Take the Uranium to the Warhead and place it in there.

Now End the round.

YOU WILL HAVE TO REPEAT THIS STEP 3 TIMES IN ORDER TO GET TO THE NEXT STEP!

The Boss called Valentina has a shield that can just be blown away with damage, then you can damage Valentina itself.

Valentina has 3 attacks. One of them will show an effect on your screen. When this happens, get out of sight. Hide behind something and wait. If she hits you with this attack you will go down instant.

If you have done enough demage Valentina will move away and you will need to go to her. The new location will be marked on the map. Keep doing damage to her until you return back to the lab. You will defeat her and a cutscene will play.

Congratulations you have to do one more step in the Easter Egg!

After the Cutscene you will need to defend Klaus. Once he has gone into the portal, your game will end and a cutscene will be played!

CONGRATULATIONS YOU HAVE SUCCESSFULLY COMPLETED THE MAIN QUEST!

Thanks to Geeky Pastimes for letting us use his description and Videos!