Here is the full list of all 20 BIT.TRIP FATE achievements.
Get a PERFECT score in Fall
Get a PERFECT score in Frustration
Get a PERFECT score in Desperation
Get a PERFECT score in Anger
Defeat the boss of Anger while in Giga Mode
Defeat 5,000 enemies
Get a PERFECT score in Patience
Watch the hidden cutscene
Beat the game on Normal difficulty
Beat Fall in Normal difficulty
Beat Anger in Normal difficulty
Beat Frustration in Normal difficulty
Beat Desperation in Normal difficulty
Beat Patience in Normal difficulty
Get a PERFECT score in Determination
Beat Determination in Normal difficulty
Beat the game, from start to finish, in one sitting
Escaped Nether Mode
Use each buddy power up at least once
Register a high score on the leaderboards