Here is the full list of all 42 Tabletop Gods achievements.
Win your first match
Use Archers to destroy a tower
Reach Level 10
Play as Humans 10 times
Play as Humans 40 times
Play as Undead 10 times
Play as Undead 40 times
Play as Demons 10 times
Play as Demons 40 times
Play on Castle Grounds 20 times
Play on Castle Grounds 60 times
Play on the Netherrealm 20 times
Play on the Netherrealm 60 times
Play on Void Temple 20 times
Play on Void Temple 60 times
Reach Level 30
Reach Level 60
Complete War: Chapter 1
Gain 24 stars in War: Chapter 1
Complete Kill the King:Chapter 1
Gain 24 stars in Kill the King:Chapter 1
Complete Orderly Destruction: Chapter 1
Gain 24 stars in Orderly Destruction: Chapter 1
Complete War: Chapter 2
Gain 24 stars in War: Chapter 2
Change your face
Achieve a Domination Victory in Multiplayer
Win 10 Domination Victories in Multiplayer.
Score a total of 600 points in a single versus Arena
Score a total of 1200 points in a single versus Arena
Score a total of 2400 points in a single versus Arena
Win a multiplayer match with one surviving Stronghold
Spectate an entire multiplayer match.
Spectate 50 multiplayer matches.
Use 200 Bombers
Have no reserves left for Skeletons, Hulks and Necromancer.
Have a single Behemoth acquire more than 30 troop kills.
Destroy a tower with a Fireball
Kill 200 enemies using Lightning Traps
Acquire 100 extra mana from the use of Mana Catalysts.
Kill 15 enemies with a single trigger of a Spike Trap
Kill 10 or more troops trapped in a single Stasis before it expires