Finish the prologue

Finish Act 1

Finish Act 2

Finish Act 3

Finish Act 4

Finish Act 5

Finish Act 6

Finish Act 7

Finish Act 8

Finish Act 9

Finish Act 10

Finish Act 11

Finish Act 12

Beat the final boss

Beat every level in the campaign

Get all of the golden bullets for all the levels in the campaign

Kill 1191 enemies with pistols

Kill 1314 enemies with shotguns

Kill 1410 enemies with machineguns

Kill 1415 enemies with sniper rifles

Kill 1187 enemies with energy weapons

Kill 1241 enemies with explosives

Kill 1097 enemies with stream weapons

Kill 732 enemies with the flamer

Fire each gun at least once

Kill 5 enemies with a single explosion

Kill 3 enemies with a single shot (Dragonflies do not count)

Defeat a boss with a Forcegun

Beat a level without missing a single shot

Kill 10 enemies with a single Hammer Strike

Kill 50 enemies with Dash

Kill 100 frozen enemies

Fire 10000 shots

Die 10 times

Buy 1 extra life

Have 5 extra lives

Buy a book

Have all armor

Buy everything

Spend 10000 gold

Be served by a cat

Kill 10000 enemies

Kill 13 ghosts

Kill an enemy with a blast from a Bomb

Kill 10 Parachuters before they hit the ground

Kill an Airship

Beat 30 levels in single player mode

Beat 30 levels in the co-op mode

Get a gold trophy in the Endless mode

Get gold trophies on all levels in the Endless mode

Beat a highscore in the Endless mode

Play every level in the Endless mode

Survive 3 waves in the Endless mode

Fully complete Act 1

Fully complete Act 2

Fully complete Act 3

Fully complete Act 4

Fully complete Act 5

Fully complete Act 6

Fully complete Act 7

Fully complete Act 8

Fully complete Act 9

Fully complete Act 10

Fully complete Act 11

Fully complete Act 12

Beat all side levels

Get 100 percent on all side levels