Opened the Dual Speeder Garage.

Recovered the Mothership's Memory.

Completed all trophies for the game!

Kill 10 bad guys in 10 seconds while on steroids.

Kill a Firefly Trooper while it's flying small.

Use the hookah in "High Times".

Find Sam in "Mirage Barrage".

Step in a pile of excrement.

Finish the "Hollywood Holocaust" level in under 3 minutes.

Step on 40 enemies after using the Shrinker on them.

Finish any level on "Damn, I'm Good" difficulty.

Complete "Lunar Apocalypse" on any difficulty.

Find the Doomguy in the Level "Death Row".