Kill eight enemies with one shot.

Kill 100 enemies with Mr. Zurkon out.

Use the Co-op overload to kill 60 enemies.

Buy all of the weapons.

Kill 500 enemies.

Collect 200 raritanium over the course of the game.

Hoverboot 112 Miles, Run 26.2 Miles and Hoverboot Glide for 2.4 miles across all game modes.

Get 10 critters on screen at once.

Reach the lobby.

Visit the Insomniac Museum.

Vanquish Lord Vorselon.

Complete a Challenge Mode playthrough.

Collect all Constructo modifications.