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