Here is the full list of all 14 aMAZE achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Complete all medium levels
All Medium Unlocked
Complete 10 levels
Complete all easy levels
All Easy Unlocked
Complete 5 levels
Start first level
Complete 25 levels
Complete all hard levels
All Hard Unlocked
Complete all levels
All levels unlocked
Complete 50 levels
Start game