1. Wave
• First gate :Find the lever near to one of the armor suits.
• To open the gate to the cellar you need to follow the cable from the gate to the trigger in the water room.
• To open the main Door between the entrance of the cellar and the water room you have to find c4 in the cellar and activate it on the door.
• To open the final hallway of wave 1 just enter the bedroom and go to the bed... ->the new way is open in the romm next to bedroom.

2. Wave
• Crack the woodslat at the first gate with your knife/syringe.
• To disable the supernatural darkness you need to find the battery in the backroom (near to the collapsed tunnel).

3. Wave
• Run through the darkness to the teleporter. DONT leave the teleporter field after activation!!!!!!!!

4. Wave
• Open the door by pressing the lever at the oposite side wall. Be fast or let all sc in. block with knife or push with syringe!!!
• Disable the ventilation blades by pressing the lever left of the bathtiles.
• On the bloodslide first went right, and then left... you need to react quick here.
• To open the final door wave4 you need to activate the trigger in the storage room left of the exit and then the trigger on the opposite side storage room of the exit.

5. Wave
• Watch your flashlight: start with 100 % and use the kevlar on the ground.
• RUN!!!
• Block with your knife if you are to slow.... the trigger is right at the entrance of the saferoom.

6. Wave
• Use the raft (& left and right ore) to ship around the obstacles and reach the other end of the bloodstream.
• the trigger to close the door is on the left side of the saferoom.

7. Wave
• Beware invisible KAERNK in the water, it will damage you randomly!
• Activate the left lever in the first room on the right -> 8 seconds to get behind the gate on the end of the halway!
• After the first gate stay left and go into the dry floor storage room, there is the trigger left hand side.
-> the gate right of the Water entrance will be open for 60 seconds!
• go back to the first room and pull the right lever -> stay always right hand side and run behind the right gate! (8 seconds open)
• Pull the trigger directly at the right gate to open it again. now it will stay open.
• Pull the trigger in the flooded storage room and RUN!. (stay right hand side until you reach some pipes, here you need to turn left and run into the saferoom and pull the trigger.

8 . Wave
• The red neon blocks on the wall are a exact copy of the walls you have to pass. Choose one way with no enemies and dont forget to open the trigger right hand side to open the exit door!
• It's more easy in singleplayer if you open a few walls and use the syringe to push scrakes away from you.
• Don't wait to long as they will rage and the Exitdoor will close !!!

9. Wave
• You lost all weapons except your syringe.
• Don't get lost! Run to the other side of the red fog room!
• Don't fall down or get trapped by gorefast!
• The way you have to walk is random, but try to remember from which side you came from.

10. Wave
• Pickup the Winchester at the start!
• You have to collect 4 skulls to open the pyramide door.
- RED: Back to the entrace; go left and collect the skull between some toxic barrels.
- BLUE: The opposite side of the entrance (stay on the highest level and the wall to your left); the skull is over a blue fire!
- GREEN: Close the Pyramide, lowest level. (right side of the pyramide if you look at the main gate)
- YELLOW: Lowest level, at the construction site left of the Pyramide. Below the walkway.
• With all 4 skulls collected: go the pyramide main gate, put the tributes on the stone and walk into the portal. Pull the lever in the prison to finish this wave.

BOSS:
• Always Abomination!
• Same Area for short/medium/long
• Find the missing lever (below one of the spiral staircases / random location)
• Find 3 batteries on the upper level (near to the barrels)
• Deactivate the lasergate by pressing the button above the entrance (upper level)
• Run to the chair in the middle and pull the trigger to sacrifice yourself and kill Abomination!!!