Shift Happens
31 Achievements
14-17h
Steam
12 years in a cave
Finish the Grotto [Singleplayer]
0.7%
How to unlock the 12 years in a cave achievement in Shift Happens - Definitive Guide
This trophy is only for Singleplayer. Complete levels 400 to 406. You do not need to complete the bonus level, 407, for this trophy.