Secret 1 – Plasma Rifle
Secret 2 – Invulnerability (Temporary)
Location: A large open room filled with crates where a massive wave spawns. The Secret: Do not leave the room immediately after the fight. Go to the northwest corner. One of the metallic wall panels has a slight gap at the bottom. Blow it open or activate it to find a Rocket Launcher and ammo crates.
Location: Deep in the sewer section where visibility is low. The Secret: Look for a pipe flowing green water. Behind the waterfall effect, there is a hidden passageway. This is a classic "waterfall door." Inside, you will find a Health Pack and a significant cash bonus ($5,000+).
