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