Here is the full list of all 51 Door Kickers: Action Squad achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Use sniper support to kill 1000 enemies
Disarm 30 bombs
Rescue 50 Wounded Policemen
Successfully complete all missions in Chapter 5
3-Star all missions in Chapter 5
Blow Open 100 Doors
Successfully complete all missions in Chapter 4
3-Star all missions in Chapter 4
Rescue 1000 hostages
Use sniper support to kill 100 enemies
Get 100 kills as Agent Fergie
Collect all 20 secret items
Kill 50 Hostages
Resurrect another player 5 times in the same mission
Use 5 extra lives in the same mission
Kill yourself with your own explosives
Kill 3 enemies by blowing up one barrel
Kill 3 enemies with one breaching charge
Get 100 kills as Recon
3-Star all missions in Chapter 3
Successfully complete all missions in Chapter 3
Kick Open 1000 Doors
Get 100 kills as Assaulter
Stun 500 enemies
Make 5 VIP Arrests
Get 100 kills as Shield
Unlock Chapter 5
Unlock Chapter 4
Unlock Chapter 3
Successfully complete all missions in Chapter 2
3-Star all missions in Chapter 2
Set 20 enemies on fire
Kill 1000 bad guys
Unlock Chapter 2
Successfully complete all missions in Chapter 1
3-Star all missions in Chapter 1
Kick Open 100 Doors
Complete a level without taking any damage whatsoever
Get 100 kills as Breacher
Kill an enemy with an elevator
Rescue 50 hostages
Collect your first secret item
Kill 50 bad guys
Win one mission in Coop
Get 3 stars in a mission