Complete Allies mission 6 on any difficulty level

Defeat 500 monsters.

Destroy D6.

Defeat Wicked K

Complete the game (awarded just before credits).

Kill 25 enemies using thermal or night vision goggles

Win a Quick Race.

Kill 50 enemies while holding your breath

Collect all magazines

Escapes from Weapon X

Raised All Combat Reflexes to Master Level

Defeat Muntz's canine squadron in the skies above Paradise Falls.