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