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