Here is the full list of all 12 LiMiT's Escape Room Games achievements.
Solve the color puzzle in "Apartment"
Solve the lightswitch riddle in "Apartment"
Open the first door in "Apartment"
Empty the fountain in "Apartment"
Destroy every clay vessel in "Apartment"
Finish the level "Apartment"
Solve the block puzzle in "Office"
Solve the chess puzzle in "Office"
Enter the safekey in "Office"
Solve the symbol puzzle in "Office"
Find the easter egg in "Office"
Finish the Office level