Barbecue four enemies at the same time using the Pyro Blaster.

Destroy all of the towers in Gorthon Crater.

Kill 50 enemies with the Vac-U 4000.

Kill 100 enemies with Mr. Zurkon out.

Escape the Polar Sea.

Defeat King Sepiad.

Use the Co-op overload to kill 60 enemies.

Defeat Commander Spog.

Kill 500 enemies.

Defeat the Wigwump.

Buy half of the weapons.

Defeat the Z'Grute.

Play a single-player game.