Here is the full list of all 41 Chivalry 2 achievements.
Win Dark Forest 10 times
Kill 2000 Enemies in a Multiplayer match.
Deflect 100 projectiles
Win Rudhelm Siege 5 times
Fire 1000 arrows
Kill 1500 Enemies in a Multiplayer match.
Kill 13 enemies with bread
Get 10 unarmed kills
Win Lionspire 10 times
Kill 1000 Enemies in a Multiplayer match.
Win as Agatha 10 times
Achieve 100 kills as Archer
Win Dark Forest 5 times
Achieve 100 kills as Knight
Win Lionspire 5 times
Successfully counter 200 attacks
Kill an enemy wielding a bastard sword, with a bastard sword
Kill 500 Enemies in a Multiplayer match.
Achieve 100 kills as Footman
Win as Mason 10 times
Bandage yourself 3 times in one life
Revive 10 downed teammates
Make an enemy fall to their death
Kill 250 Enemies in a Multiplayer match.
Achieve 100 kills as Vanguard
Die from fire
Kill 100 Enemies in a Multiplayer match.
Get revived from a downed state
Kill 50 Enemies in a Multiplayer match.
Achieve 2 kills in a row without dying while under 25 health
Kill 10 Enemies in a Multiplayer match.
Win Dark Forest 25 times
Win Coxwell 5 times
Win Coxwell 10 times
Win Coxwell 25 times
Win Lionspire 25 times
Win Rudhelm Siege 10 times
Win Rudhelm Siege 25 times
Get 50 kills with siege weapons
Get 50 kills in one match
Kill an enemy with a projectile from over 100 meters