Kill 10 bad guys in 10 seconds while on steroids.

Kill every enemy on a level.

Step on 40 enemies after using the Shrinker on them.

Complete "Shrapnel City" on any difficulty.

Complete "L.A. Meltdown" on any difficulty.

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

Complete "Alien World Order" on any difficulty.

Carry all weapons with ammo at once.

Listen to Developer Commentary (Use at least one trigger).

Step in a pile of excrement.

Uncover the final Shelob memory and reveal the Web of Fate.

Shame an Assassin until he becomes deranged.