There's an easy mode, if you want to call it that, where you'll get unlimited lives and more energy, along with easier enemies. (nintendoworldreport.com)
Because you don't have to make too many button presses during combat, it's possible to speed through easy enemies this way. (rotorob.com)
For example, the shore contains relatively easy enemies while the forests enemies will tear you apart if you're not ready for the challenge. (nonfictiongaming.com)