Infected (song)

Infectethumb|right|200px|Infected by Bad Religiond is the Easter Egg song for Highdon Research Centre. It is performed by the band Bad Religion.

Activation
To active the song the player must press the action button on three 115 rocks around the map.

Rock #1
The first rock is hidden in the starting room. By the window at the right of the spawn there is some planks. The rock is hidden behind them.

Rock #2
The second rock is in the MP5K room. Near the only window is some shelves. On the top shelf is the rock.

Rock #3
The final rock is in the final room (with the M16). In the corner there is a stack of boxes. The rock is on the lowest viewable box.