Complete a hard puzzle without using hints.
Complete any puzzle without using hints.
Discover the secret puzzle!
Complete 10 puzzles of any level.
Complete 100 puzzles of any level.
Complete 40 puzzles of any level.
Complete any puzzle in less than 10 minutes without using hints.
Complete any puzzle in less than 15 minutes without using hints.
Complete any puzzle in less than 5 minutes without using hints.