Get time bonus in every single player level.
Collect all stars.
Survive 5 minutes in the bonus level.
Destroy two tentacles of an octopus in a one moment.
Find the secret behind saws.
Throw lich boss in a big hole.
Throw 30 enemies in a hole.
Collect item without a head.
Complete any level, collecting all stars and bonuses.
Complete the tutorial.
