Here is the full list of all 20 Hyphen achievements.
Died 100 times
Earned your first 5✯ rating on level completion
Listened to every track in the soundtrack
Earned 5 5✯ ratings on level completion
Earned 10 5✯ ratings on level completion
Earned 25 5✯ ratings on level completion
Every level completed with a 5✯ rating
Watched the credits in their entirety
Completed every level in the game
Completed half of the games levels
Completed one quarter of the games levels
Unlocked both of the mini games
Survived for 1 minute in the Cannon Dodge mini game
Survived 45 waves in the Hot Floors mini game
Died 1000 times
Died 5000 times
Get at least a 4✯ rating on the ALLOYD, BIGBADBOB & MCCANNMARC levels
Bragged to at least one social network
Attempted any single level at least 10 times
Launched the game at least 50 times