Destroy 20 light sources (light bulbs, etc.)
Blow up at least four enemies with one shot
Watch the credits at the end of the game
Kill the level 3 boss of the expansion pack
Kill the level 16 boss
Beat the game
Beat the game without dying
Find all the unique powerups, including Invisibility, the Reflector, and the Chojin Mask
Gib enemies into a total of 500 chunks
Kill an enemy with the Reflector
Kill the level 12 boss
Use the OP Mega Destroyer for the first time
Kill the level 8 boss
Spend three minutes trying to get past the gate in the first level of the expansion pack
Spend three minutes trying to get past the gate in the first Egypt level
Get killed by your own weapon
Kill the level 4 boss
Get killed by the fan on level 4
Get killed by an environmental hazard like poisonous water, lava, or a trap
Die for the first time
Shoot off a total of 50 enemy limbs
Beat the game on hard
Beat the game in 90 minutes or less
Beat the game using only your first weapon
Beat the game on hard without dying using only your first weapon
Find all the secret rooms and hidden items