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