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