Here is the full list of all 20 Geometry Survivor achievements.
Survive for 13 minutes
Survive for 12 minutes
Survive for 11 minutes
Survive for 10 minutes
Survive for 9 minutes
Survive for 8 minutes
Survive for 7 minutes
Survive for 6 minutes
Survive for 5 minutes
Survive for 4 minutes
Survive for 3 minutes
Survive for 2 minutes
Survive for 1 minutes
Survive for 14 minutes
Survive for 15 minutes
Survive for 16 minutes
Survive for 17 minutes
Survive for 18 minutes
Survive for 19 minutes
Survive for 20 minutes