You can use Flash Attack (or a bow) to get to the few opponents up on the mountains (you will either need to leave an opponent on the ground to Flash Attack back, or use the teleporter stones to get down).
You may also be able to toss a teleporter stone up onto the mountains and use them to move around (except for a couple areas that have stair access, the mountains are not part of the normal play area, and your character will probably not be able to walk there).
For example, see
a way out, if you're Stuck in the Easter Egg Area (broken links are fixed in a reply).
Alchemy Spoiler Thread
