Here is the full list of all 20 Life in Bunker achievements.
500 Cycles in sandbox mode
Complete scenario 3
Complete all scenarios
Complete scenario 2
Complete scenario 1
Build 20 Guard bots in one game
Build a reactor on each level
Recycle 2000 garbage
All researches
30 residents for 20 cycles
Last for 50 cycles in the bunker
Kill 50 molemen in one game
Stay alive in the bunker for 40 cycles
Survive 30 cycles in the bunker
Stay in the bunker for 20 cycles
Last for 10 cycles in the bunker
Survive 5 cycles in the bunker
New resident
Survive 1 cycle in the bunker
Kill a moleman