Here is the full list of all 30 Abomination Tower achievements.
500 deaths
Level Three Complete
200 deaths
Unlocked 'Speed demon'
Level Two Complete
Unlocked 'Save my butt'
A century!
Level One Complete
50 deaths!
Level Four Complete
Level Five Complete
Level Six Complete
Level Seven Complete
Level Eight Complete
Level 9 Complete
Level 10 Complete
All the way back down
Unlocked 'Air head'
Unlocked 'Bucket'
Unlocked 'Flappy ears'
Unlocked 'Biter'
Unlocked 'All seeing'
Unlocked 'Spiker'
Unlocked 'Golden ego'
Unlocked 'Already dead'
1000 deaths
Finished Hardcore mode!
Finished Hard Mode!
Finished Normal Mode!
Finished Easy Mode!