First you have to get to the room with the power switch.

One person should get the window in the back, another person should get the window beside the door in the front and 2 people should get the door in the front.

Rotate every 2 rounds so everyone gets enough points.

Everybody should get about 10,000 points.

If you survive turn on the power by Jugger-nog, and go pack a punch.

Me and my 3 friends made it to round 63 by doing this.