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