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