Beat the game
Beat the game after collecting all Space Ducks
Find the secret egg room
Find the secret path and fully clear it
Beat the boss without taking damage
Beat the boss without pressing the A button
Beat the game without dying
Beat the game without dying or recovering health
Beat the game without landing on the ground 100 or more times
Beat the game in under 500 A presses
Beat the game in under 10 minutes
Hit the first save button in under 30 seconds