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