Beat eight special levels without losing and claim great Treasure Chests.
If you lose between Level 1 and 3, you will have to start over from the beginning. However, if you lose between Level 4 and 8, you will only have to start from Level 4.
Don't forget to keep an eye on the time. If the countdown runs out, your progress will be reset.
To see what rewards are waiting for you, just tap the chests to see their contents.