Here is the full list of all 13 LOOP: A Tranquil Puzzle Game achievements.
Complete 100 Levels.
Complete 90 Levels.
Complete 80 Levels.
Complete 70 Levels.
Complete 60 Levels.
Complete 50 Levels.
Complete 40 Levels.
Complete 30 Levels.
Complete 20 Levels.
Complete 10 Levels.
Complete 100 Procedural Levels.
Complete 400 Procedural Levels.
Complete 1000 Procedural Levels.