Clear Castle Goofstein
Clear Castle Goofstein without gaining any score (points from remaining HP doesn't count)
Clear Forest
Rescue King Goofy in Duckingham Palace
Defeat the boss of Duckingham Palace without getting hit
Defeat the boss of Duckingham Palace in 22 seconds or less
Find King Donald in the Sunken Ruins
Clear Rainbow Wastelands and obtain the key from there
Defeat the boss of Rainbow Wastelands without getting hit
Defeat the boss of Rainbow Wastelands while only throwing soap eight times
Clear Crystal Forest and obtain the key from there
Defeat the boss of Crystal Forest without getting hit
Defeat the boss of Crystal Forest while staying on the right half of the screen
Clear Gardens of Illusion
Clear Tree of Life by defeating the Sorcerer of Darkness
Defeat the bosses of Tree of Life without getting hit
Clear Falls of Fortune
Clear Falls of Fortune while collecting all gems on the way down
Become the new king of the land after overthrowing King Pete
Defeat King Pete without getting hit
Collect a 1-up in Castle Goofstein
Collect a 1-up in Forest
Collect a 1-up in Duckingham Palace
Collect a 1-up in Sunken Ruins
Collect a 1-up in Crystal Forest
Collect a 1-up in Garden of Illusion
Finish the game with 9 lives
Defeat the boss of Crystal Forest while only throwing soap five times
Defeat the bosses of Tree of Life while only throwing soap sixteen times
Clear Forest while only getting 100 score (points from remaining HP doesn't count, must game over to reset past first screen)
Reach the boss of Duckingham Palace without gaining any score (points from remaining HP doesn't count)
Clear Sunken Ruins without gaining any score (points from remaining HP doesn't count, must game over to reset past first screen)
Reach the boss of Rainbow Wastelands without gaining any score (points from remaining HP doesn't count)
Reach the boss of Crystal Forest while only getting 500 score (points from remaining HP doesn't count, must game over to reset past first screen)
Clear Garden of Illusion without gaining any score (points from remaining HP doesn't count, must game over to reset past first screen)
Reach the boss of Tree of Life without gaining any score (points from remaining HP doesn't count)
Clear Falls of Fortune without gaining any score (points from remaining HP doesn't count)