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.
Steal 6 big toy boxes
Steal and sell 7 pumpkins on BlackBay
Steal 5 construction yellow boxes
Steal and sell 8 candy bags on BlackBay
Steal santa sleigh car
Steal and sell 4 creepy dolls on BlackBay
Steal the skid loader
Steal the forklift
Steal 10 toasters
Break 10 toilets
Steal 5 consoles
Break a window with a brick
Steal Aisan Cougar
Steal 5 cars
Steal Kubra GTS
Steal items worth 100000
Break 10 dishes
Finish story
Finish 10 thefts without beeing seen
Steal items worth 50000
Steal Vulcan Spectre
Steal 10 paintings
Steal Bolthorn Family MkV
Disable 10 control panels
Steal Bolthorn 86 Classic
Steal items worth 20000
Steal 5 TVs
Break 10 windows
Steal items worth 5000
Find 5 Faberge Egg replicas in Richie R.
Sell all presents on BlackBay
Buy a cloaking device on ng+
Sell 5 VHS on BlackBay