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