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