Here is the full list of all 30 Antihero achievements.
Win 300 matches online
Trap an opponent thief
Complete the game
Complete all levels on Hard
Defeat Frannie
Defeat Gashford
Defeat Mathilde
Defeat Lygrave
Complete level 1
Win 100 matches online
Win a match with 2 blackmails
Win a match with 3 bribes
Kill a max-level gang with an assassin
Evict a full business that was trapped
Kill 4 assassination contracts in a single match
Employ 2 max-level gangs simultaneously
Get 3 victory points in a turn
Trap your opponent 5 times in a single match
Buy all guild upgrades in a single match
Evict 12 urchins in a match
Get 15 gold in a single turn
Win an online match in 10 or fewer turns
Play an opponent who already has the Black Plague
Win "The Masquerade" online
Win 10 matches online
Win "The Wharf" online
Win "The Palace" online
Win "The Big City" online
Play a match online
Win a match online