Get all of the golden bullets for all the levels in the campaign
Beat every level in the campaign
Buy everything
Kill 1415 enemies with sniper rifles
Have all armor
Beat the final boss
Get 100 percent on all side levels
Beat all side levels
Finish Act 12
Be served by a cat
Fully complete Act 12
Have 5 extra lives
Finish Act 11
Fully complete Act 11
Fully complete Act 10
Finish Act 10
Defeat a boss with a Forcegun
Finish Act 9
Fully complete Act 9
Finish Act 8
Fully complete Act 8
Kill 1314 enemies with shotguns
Fully complete Act 7
Finish Act 7
Kill 1410 enemies with machineguns
Kill 732 enemies with the flamer
Fully complete Act 6
Finish Act 6
Fully complete Act 5
Finish Act 5
Beat 30 levels in the co-op mode
Kill 1187 enemies with energy weapons
Kill 10000 enemies
Fully complete Act 4
Finish Act 4
Kill 1241 enemies with explosives
Kill an Airship
Finish Act 3
Fully complete Act 3
Kill 100 frozen enemies
Kill 1097 enemies with stream weapons
Fully complete Act 2
Finish Act 2
Kill 1191 enemies with pistols
Beat a level without missing a single shot
Beat 30 levels in single player mode
Fully complete Act 1
Finish Act 1
Die 10 times
Fire 10000 shots
Spend 10000 gold
Kill 13 ghosts
Play every level in the Endless mode
Kill an enemy with a blast from a Bomb
Get gold trophies on all levels in the Endless mode
Kill 50 enemies with Dash
Kill 5 enemies with a single explosion
Kill 10 Parachuters before they hit the ground
Survive 3 waves in the Endless mode
Beat a highscore in the Endless mode
Kill 10 enemies with a single Hammer Strike
Kill 3 enemies with a single shot (Dragonflies do not count)
Get a gold trophy in the Endless mode
Buy 1 extra life
Buy a book
Finish the prologue
Fire each gun at least once