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