Here is the full list of all 15 Escape Master achievements.
Kill 20 guards
Clear the game in difficultyl mode
Get a total of 10,000 coins
Drink 50 bottles of mystery potion
Clear the game in normal mode
Clear the game in easy mode
Killed one of the hostages
Play time is more than 1 hours
Upgrade any character to full level
Kill 1 robot
Get negative buff twice in a row
Falling from the platform
Kill 1 guard
Use a Christmas item
Complete the beginner tutorial level