Here is the full list of all 67 Kick Ass Commandos achievements.
Kill 25,000 Enemies
Rescue 1,000 Commandos
Rescue 500 Commandos
500 Enemies Killed by Grenades
1,000 Grenades Thrown by the Player
Complete Mission Pack 6: Hell on Ice
Survive the Ice Caves in Mission Pack 6
Defeat Boss Bomber in Mission Pack 6
Unlock Commando Berserker in Mission Pack 6
Win Bumper Tires in Mission Pack 6
Complete Mission Pack 5: DNA Test
Kill the Queen Beetle in Mission Pack 5
Kill the Giant Gator in Mission Pack 5
500 Enemies Killed by Rockets
25 Enemies Killed by Landmines
Kill 10,000 Enemies
Rank Up a Commando General
10,000 Flames Fired by the Player
Rank Up a Commando Lieutenant General
Unlock Commando Gator Jack in Mission Pack 5
Rank Up a Commando Major General
5,000 Enemies Killed by Bullets
1,000 Rockets Fired by the Player
Kill the Monster Yeti in Mission Pack 5
Rank Up a Commando Brigadier General
Complete Mission Pack 4: Going Rogue
Rescue 250 Commandos
Unlock Commando Midnight in Mission Pack 4
Rescue the Bunnies in Mission Pack 4
Unlock Commando Ricardo in Mission Pack 4
Rank Up a Commando Colonel
Survive the Horror in Mission Pack 4
Rank Up a Commando Lieutenant Colonel
50,000 Bullets Fired by the Player
Rescue Captain Gary in Mission Pack 4
Rank Up a Commando Major
Complete Mission Pack 3: Bombs Away
250 Enemies Killed by Flames
Destory all the Bombs in Mission Pack 3
250 Enemies Killed by Explosions
Get Major Wood in Mission Pack 3
Rank Up a Commando Captain
Kill 2,500 Enemies
Unlock Commando Joker in Mission Pack 3
Defeat the Anvil in Mission Pack 3
Rank Up a Commando 1st Lieutenant
Rescue 100 Commandos
Complete Mission Pack 2: Krystal Yayo
Rank Up a Commando 2nd Lieutenant
Rank Up a Commando Sergeant 1st Class
100 Enemies Killed by Knife Stabs
Kill the Rocket Bros in Mission Pack 2
Unlock Commando Blaze in Mission Pack 2
Complete Mission Pack 1: Basic Training
Unlock Commando Mohawk in Mission Pack 1
Unlock Commando Blondie in Mission Pack 1
Unlock Commando 6-Pack in Mission Pack 1
Kill 100 Enemies
Kill 500 Enemies
Rescue 25 Commandos
1,000 Knife Stabs by the Player
Rank Up a Commando to Private 1st Class
Rank Up a Commando to Corporal
Rank Up a Commando to Sergeant
Rank Up a Commando to Staff Sergeant
Complete the Tutorial Mission
Survive the Dreaded Showers in Mission Pack 1