Here is the full list of all 16 Test Tube Titans achievements.
Complete 60 bonus missions.
Destabilize 2500 buildings.
Cause $1 million in damage.
Travel 100,000m.
Destroy 250 enemy vehicles.
Spend 4 hours in the field.
Destroy 40 helicopters.
Eat 100 humans.
Squish 2500 humans.
Expire 1000 titans in the field.
Mutate 400 times.
Use 400 units of radiation.
Create 25 new titans.
Level up titans 75 times.
Destroy 1000 trees.
Destroy 350 civilian vehicles.