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