Here is the full list of all 11 Escape First 3 achievements.
Complete the Abandoned School
Complete the 2nd floor's extra puzzles
Complete the Keep of Lost Souls
Find the witch hunters' hiding place before it is revealed to you
Grab all rats in the room
Unlock the cabinet like a true barbarian
You don't care for money, you are a hunter
Complete the Secret Inheritance
No one is even looking at each other
Go directly to the correct room on the 2nd floor
Solve the turning tables puzzle in 5 clicks or less