Finish the prologue.

Beat every level 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 don't 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 10,000 shots.

Die 10 times.

Buy 1 extra life.

Have 5 extra lives.

Buy a book.

Have all armor.

Spend 10,000 gold.

Be served by a cat.

Kill 10,000 enemies.

Destroy 13 ghosts.

Kill an enemy with a blast from a Bomb.

Kill 10 Parachuters before they hit the ground.

Kill an Airship.

Beat 30 Campaign levels with a single knight.

Beat 30 Campaign levels with two knights.

Get a gold trophy in Endless mode.

Beat a high score in Endless mode.

Play every level in Endless mode.

Survive 3 waves in 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.