Complete Bonus Level 301.
Complete Bonus Level 201.
Complete Bonus Level 101.
Complete Bonus Level 1.
Build a level in the editor.
Complete Adventure Mode.
Complete any desert level.
Complete any swamp level.
Complete any cloud level.
Complete any lava level.
Defeat 5 blue enemies with the hammer.
Destroy 5 wooden boxes.
Complete the first level.
Defeat 5 pink enemies with the hammer.
Defeat 5 purple enemies with the hammer.
Collect 10 coins.
Get the Hammer.