Collect all of the pixels in the game

Defeat the game's final boss

Complete 20 levels in the game's challenge mode

Obtain a gold star on any level

Obtain a gold star on any 10 levels

Defeat the boss of World 1

Defeat the boss of World 2

Defeat the boss of World 3

Defeat the boss of World 4

Survive 30 seconds with the "death wall" in level 1-11

Find any hidden area within the game

Complete a level without killing any enemies (not even bats!)

Complete a level without ever entering the Realm of Code

Carry the first Spider Clam to the goal tape on level 3-11