Full list of all 33 Thief Simulator achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 29 achievements, and there are 4 DLC packs containing 4 achievements.
Finish 10 thefts without beeing seen
Steal Bolthorn Family MkV
Disable 10 control panels
Steal items worth 20000
Steal Bolthorn 86 Classic
Steal 10 paintings
Steal items worth 5000
Steal 5 TVs
Steal 5 cars
Break a window with a brick
Steal Aisan Cougar
Steal Vulcan Spectre
Steal Kubra GTS
Steal items worth 50000
Steal items worth 100000
Steal 5 consoles
Break 10 dishes
Finish story
Break 10 toilets
Break 10 windows
Steal 10 toasters
Steal 5 construction yellow boxes
Steal the forklift
Steal the skid loader
Steal and sell 8 candy bags on BlackBay
Steal and sell 4 creepy dolls on BlackBay
Steal and sell 7 pumpkins on BlackBay
Steal santa sleigh car
Steal 6 big toy boxes
Find 5 Faberge Egg replicas in Richie R.
Sell all presents on BlackBay
Buy a cloaking device on ng+
Sell 5 VHS on BlackBay