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