Quake/Castle of the Damned

Secrets

 * 1) At the start, dive in the water and shoot the wall on the right. Swim through to reach a secret with health kits.  (There is more than one way to access this secret.0
 * 2) In the yellow armor area, dive in the water and walk to the wall under the shootable button.
 * 3) In the far corner of the map (behind the door that opens once you get the silver key), look for a pillar with a loose brick.  Push against the brick to reveal a Quad Damage.