Power - Speak to Ravenov. Now go and turn on the power.
Sergei's Head - There will be 6 possible locations. The first location is in Scorched Defense under the ramp and the far left. The second location is in Scorched Defense, across from a burning tank on a short wall. The third location is in Rocky Defense, It is on top of the sand bags next to the barrels and the left side. The fourth location is at Rocky Defense, under the stairs at the right side. The fifth spawn is at Jungle Defense, placed next to the barrels behind the turret in the middle. The final spawn is at Jungle Defense. In the middle where there is a small crater in the ground and the head will be in the bush next to it.
Place Head - When you pick up the head, take it over to the Field Hospital at the barracks and place it on the table that has a blue light above it.
Essence Trap - Speak with Dr. Peck in Mission Control. Then go speak with Ravenov and pick up the keycard. Now there will be three locker to open and each will have a part. The first locker to open is in Equipment Storage. The second locker is in Engineering. The final locker is Colonel's Office in Military Command. Go to the Field Hospital and interact with the mixer. Now kill all the Hellhounds that spawn. Now interact with the mixer again to pick it up. Now go to the OPC and place the mixer on top of Ac unit. Then go back to Dr. Peck. Go to the Data Center and interact with the machine on the wall near Speed Cola. Pick up and essence trap.
First Perk - Go to the village and get a zombie low on health. Now place an essance trap so that the zombie goes into it. Now pick it back up. Go up the stairs next to pack-a-punch and look into the small opening where there is a pile of items. There should be a blue bunny. Stare at the bunny until it's head turn to you then keep staring. Now you will be teleported into a forest. Now you will have to find three glowing floating bunneys and shoot them. Once you shot all three look around for a crate and open it and pick up everything very quickly because you will be teleported out.
Hospital Trap - Go back to over to the Field Hospital and place the essence trap where the head is.
Second Perk - Go back to the Colonel's Office and open up the safe and collect the perk inside.