Here is the full list of all 33 Age of Chivalry achievements.
Get 500 kills with each class
Slay 1000 Agathians and 1000 Masons
Get 1000 kills with the Longbow
Kill 100 with your Warhammer.
Get 200 Kills with the Longbow
Accumulate 1000 Kills.
Get 200 kills with the Dagger
Slay 25 with throwing axes.
Slay 25 with throwing knives.
Score 150 points or more on Sorrow
Get 20 decapitations in one round
Decpitate 2 opponents with 1 swing
Kill 3 people while on the brink of death
Get 50 kills with the Longbow
Torch 5 players to death in one round
Kill 10 players with your hand axe.
Get a Headshot with the Ballista
Decapitate a peasant in The Shore.
Chop down the Tree in The Shore.
Decapitate an opponent that is on fire
Be mean to animals.
Found the secret room!
Execute a prisoner in Dark Forest.
Hit an opponent with a Javelin from over 100 feet away
Push the cart on Dark Forest.
Push the bomb cart in Helms Deep.
Kill someone with an oilpot.
Headshot, Decap or Head Explodie the last person to kill you after dying.
Destroy the developer gravestones in Death Valley.
Get 10 Headshots with the Bow in one game
Kill 5 enemies without dying
Get the first kill in a round
Fire the Trebuchet in The Siege.