Full list of all 25 Dark Grim Mariupolis achievements worth 4,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements in the base game.
The base game contains 10 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 15 achievements worth 3,000 Gamerscore.
Finished the prologue.
Be victorious any time.
Ask the priest for a duel.
Be victorious.
Be victorious for a second time.
Stay at peace.
Finished the game
Opened the Naropolus' door
Solved the RGB puzzle.
Repaired and scavenged the robots.
Talk to the Chief.
Talk to the Pentatonical Priest
Escape through the Bar shelf.
Talk to the Dinosaur Head.
Open the door of your house with a key
Wait for an elevator for a while
Get the Game Over screen
Tune the piano
Intimidate your PC with a hammer
Ask the Fugu for advice 5 times in the same location
Solve the Cube puzzle
Solve the random numbers puzzle
Talk to the Kiryat priest
Talk to Sergio
Finish the report