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