Here is the full list of all 43 Door Kickers achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
Get two stars in every Single Mission.
Defuse 100 bombs.
Get 30 Perfect Plan Medals.
Get 30 One Man Army Medals.
Kill 10 bad guys within 5 seconds, without letting them fire a shot.
Fully complete campaign "Terror at Sea"
Fully complete campaign "The Cell"
Fully complete campaign "Suits and Ski-Masks"
Arrest 100 enemies.
Complete a mission arresting 6 or more bad guys and without killing any.
Get your first One Man Army Medal
Get one star in every Single Mission.
Breach 400 doors.
Unlock all equipment / weapons.
Win a campaign in Iron Man Mode.
Have your entire team killed at roughly the same time after unpausing the game, within seconds of mission start.
Defuse a bomb with less then 1 second left.
Have a squad of fully leveled up troopers.
Fire a total of 10000 rounds.
Get 30 No Pause Medals.
Complete 150 missions.
Level-up a trooper to maximum level.
Hit 5 enemies with the same Flashbang.
Walk total 10000 meters.
Kill 1000 enemies.
Have a shield unit kill three enemies without moving.
Level-up your squad to maximum level.
Unlock all playable classes
Fully complete campaign "Drug Bust"
Unlock the Breacher class
Get your first Perfect Plan Medal
Get 50 stars
Fully complete campaign "A Hard Day's Work"
Handcuff your first bad guy
Unlock the Shield Class
Defuse your first bomb
Save your first hostage
Complete 10 missions
Get 13 stars
Unlock the Assaulter class
Get a 3 star result as an "improved result" on a mission
Get your first No Pause Medal
Get three stars in all Single Missions.