Use 15 undos
Use 5 undos
Retry the same level 5 times
Complete a puzzle using only hints
Use 5 hints
Retry the same level 10 times
Complete 5 puzzles in a row without using hints and undos
Complete the Tutorial levels
Complete 50 levels
Complete the first 25 levels
Use 30 undos
Complete 70 levels
Use 30 hints
Use 15 hints
Complete 85 puzzles in a row without using hints and undos
Complete 55 puzzles in a row without using hints and undos
Complete 20 puzzles in a row without using hints and undos
Complete the game
Complete the game without using hints and undos
Complete the game without using hints