Here is the full list of all 40 Bitardia achievements.
The base game contains 37 achievements, and there is 1 DLC pack containing 3 achievements.
Take care of the hospital
Return anon's debt
Take care of the bank
Finish the "Winter is coming" quest
Rob the caravan
Finish the "Fifth wheel" quest
Agree to work on Abu
To die, refusing to work on the Abu
Take the guard quest
Break out of prison
Get to jail after showing the video
You didn't accept the note-finding mission
Finish the "QT 3.14" quest
Take the builder quest
Kill Cancer on the first mission
Pick Anon Mask
Pick Cancer Mask
Kill anons on the first mission
Kill cancer on the first mission
Explode the building
Get to jail after talking to police
Get to jail after entering the police station
Get to jail while taking the camera
You have finished the note-finding mission
Finish the "Fifth Column" quest
Get arrested for spoiling the stand
Buy a pillow for anon
Get some cash on arena
More than 100 killed on arena
Served a term in prison
Rescue the hostage
Finish the "Hotline Bitardia" quest
Beat anon in cards
Finish a halloween-quests
Finish the "Missing part" quest
Agree to work for resistance