Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Destructive as fire	Up fire to 6.
It seems I stay here too much	Level up to 10.
Mountain of skulls	Slain 100 Skeletons.
My watch	To fulfill the request of the priestess.
Strong as a rock	Up earth to 6.
Water exercises	Up water to 6.
Wind in my head	Up air to 6.