Rampage Inducer
On The Archon, the Rampage Inducer is hidden in the Temple itself. Five bull skulls must be shot in order; any weapon works, and each one bursts into flames when it is hit.
- Above the Mystery Box spot on the left of the courtyard, as the game starts.
- Above the zombie spawn in the middle of the Temple.
- Above the SVT-40 wall buy.
- High on the wall in the middle, just before the Pack-a-Punch area.
- Above the Pack-a-Punch Machine.

The stone
It appears at the foot of the tree facing the Pack-a-Punch. Once activated, zombies spawn faster and move faster.
Solo and co-op
In solo it can be turned on and off at will; in co-op every player has to vote for it.
Round 55
At the end of round 55 it shuts down for good and explodes.
