Here is the full list of all 25 TowerMancer achievements.
Lose a game
Defeat The Lich on any difficulty
Defeat The Lich on hard difficulty
Defeat The Archmage on any difficulty
Defeat The Archmage on hard difficulty
Complete the main campaign
Clear 33 stages
Get 3 stars on every stage on any difficulty
Get 3 stars on every stage on hard difficulty
Clear one random stage mode
Build 25 decorative rooms
Build 50 generator rooms
Build 50 defensive rooms
Throw 50 resources into the void
Repair 50 rooms
Break 10 floors
Build 102 floors
Clear all the challenges
Deliver 333 resources
Arrests 33
Don't miss any opportunity!
Defend 50 threats
Get 3 stars on every stage on all difficulties
Build every kind of room in a single tower
Get all other achievements