Here is the full list of all 16 Morbolbo: Enter the Maze achievements.
Complete level 5
Complete level 5 on hardcore difficulty
Complete Level 10
Complete level 10 on hardcore difficulty
Complete level 15
Complete level 15 on hardcore difficulty
Earn 1000 gold
Earn 10 000 gold
Earn 100 000 gold
Drop more than 1000 gold in one level
Unlock the secret outfit
Unlock all hats
Unlock all weapons
Enter the Tower and obtain the wizard robes
Defeat 25 enemies with traps
Defeat 100 enemies