Shoot an enemy radio

Put an enemy in a locker

Finish a level without slamming or respawning

Defeat Liquid Snake

Defeat Garmantuous and take down the G3 cartel.

Obtain Lezduit.

Spend 15 hours at the very real in-game alien strip club.

Pop 20 Grunt eyeballs.

Defeat the Skrendel Brothers.

Obtain the Jetpack.

Defeat Douglas.

Obtain Gus.

Take Knifey's advice and stab Gene in the gut.