Portal: Still Alive Test Chamber 4 (Bonus)

This test chamber is the fourth bonus level of the game. It is based on a level from Portal: The Flash Version MapPack. The challenges of this level are unlocked when the test chamber is completed once.

Mechanics

 * Weighted Storage Cube (Skull version)
 * Vital Apparatus Vent
 * Pedestal Button (Skull version)
 * Heavy Duty Super-Colliding Super Button (H.D.S.C.S.B)

Hazards

 * Getting hit with a cube