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