Here is the full list of all 82 Circle Empires achievements.
Achieve a total score of 1 000 000
Spawn 20 Merman Archers
Win vs AI Players on Extreme difficulty on any map
Win vs AI Players on Nightmare difficulty on any map
kill 50 vampires in a single game
Defeated Mahu the Mad Dragon
Kill 10 necro towers in a single game
Defeated Neu-Morg the Master Necromancer
Kill 10 necromancers in a single game
Defeated Hur the Hungry Dragon
Defeated Voltaire the Vicious Vampire
Defeated Gruff the Goblin General
Defeated Morgana the Mother of Monsters
Defeated Geld-Zom the Ghastly
Defeated Ron the Rebel King
Defeated Reeker the Red Dragon
Defeated Arg the Anger Lord
Defeated Sudogar the Sorcerer
Spawn 3 level 3 banks
Achieve a total score of 100 000
Win Full Conquest mode on Impossible difficulty on any map
Spawn 10 pumpkin-men
Spawn 10 pumpkin necromancers
Spawn 5 Ice Hunters
Accumulate 20 000 gold
Accumulate 50 000 gold
Accumulate 200 000 gold
Spawn 50 frog workers
Win Full Conquest mode on Nightmare difficulty on any map
Have a level 6 vampire in your army
Kill 2 enemy catapults
Have 100 or more zombies in your army
Have 10 or more max level archers in your army
Have 3 or more necromancers in your army
Have 100 or more axe throwers in your army
Have 100 or more swordsmen in your army
Have a level 5 vampire in your army
Spawn 10 catapults
Get a maximum size haunted pumpkin. Can only be unlocked during the spoooookiest time of the year.
Have a level 4 vampire in your army
Win Full Conquest mode on Extreme difficulty on any map
Win vs AI Players on Hard difficulty on any map
Win on an Extra Large map
Have 10 or more level 2 horse archers in your army
Level a swordsman to max level
Defeated Maugor the Monster
Kill 50 zombies in a single game
Win on a Large map
Win vs AI Players on Easy difficulty on any map
Have a max level goblin in your army
Amass 10 000 wood
Win Full Conquest mode on Hard difficulty on any map
Own 9 banks
Built 16 or more walls in a single game
Acquire all unit upgrades
Have 20 ghosts or frost ghosts in your army
Amass 10 000 gold
Have 100 workers
Detonate 10 explosive mushrooms
Construct 4 types of towers in one circle
Have 3 or more wizards in your army
Have 100 or more goblins in your army
Have 10 or more healers in your army
Achieve a total score of 10 000
Achieve a total score of 5000
Win vs AI Players on Normal difficulty on any map
Have 10 or more knights in your army
Achieve a total score of 1000
Win Full Conquest mode on Normal difficulty on any map
Attain the rank of Healer
Harvest a max level pumpkin
Own your first dragon
Amass 10 000 food
Have a vampire in your army