Here is the full list of all 69 Super Dungeon Boy achievements.
Level R completed.
Die near reaching the end of the stage.
Level Q completed.
Level P completed.
Kill 500 enemies.
Level O completed.
Golden Level M completed.
Golden Level L completed.
Golden Level K completed.
Golden Level J completed.
Golden Level I completed.
Golden Level H completed.
Golden Level G completed.
Golden Level F completed.
Golden Level E completed.
Golden Level D completed.
Buy all the lives of a level, but do not use any!
Golden Level C completed.
Golden Level B completed.
Golden Level A completed.
Do not kill or wake a bat. Only on levels from J to Z.
Pass a level without firing a single arrow. Only on levels from J to Z.
Win a level without collecting any coins.
Level N completed.
Level M completed.
Level L completed.
Level K completed.
Level J completed.
Level I completed.
Level H completed.
Complete a level with exactly 99 coins.
Level G completed.
Level F completed.
Level E completed.
Level D completed.
Level C completed.
Pass a level without losing a life. Only on levels from J to Z.
Find a secret.
Level B completed.
Level A completed.
Kill all enemies in a level. Only on levels from J to Z.
Level S completed.
Level T completed.
Level U completed.
Level V completed.
Level W completed.
Level X completed.
Level Y completed.
Level Z completed.
Collect 10,000 coins.
Kill 10 bats while on flight in mid-air.
Win a fight against 5 bats at once.
Do not be seen by an enemy. Only on levels from J to Z.
Pass all levels of the game.
Find all the treasures in the world!
Golden Level N completed.
Golden Level O completed.
Golden Level P completed.
Golden Level Q completed.
Golden Level R completed.
Golden Level S completed.
Golden Level T completed.
Golden Level U completed.
Golden Level V completed.
Golden Level W completed.
Golden Level X completed.
Golden Level Y completed.
Golden Level Z completed.
You have completed all of the game's achievements.