Splode 300 times in a single level.
Select "Credits" from the "Help & Options" menu and watch the whole thing.
Change the controls around in the "Controls" menu.
Complete a level without killing any Scientists.
Eliminate 10 Scientists and stop them from spreading their filthy lies.
Complete the Single Player game in Hardcore mode.
Release The Maw from his cage and send him into space.
Complete the Single Player game.
Complete the Multiplayer game.
Create 5,000 filets.
Collect all 47 cakes in Single Player mode.
Collect all 47 cakes in Multiplayer mode.