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