Very interesting. It looks very nice, but there's not much you can do aside from jumping and gliding, which doesn't offer a lot of vertical mobility. Am I missing something?
Just like in adamgryu’s A Short Hike, if you talk to the NPCs they'll give you fetch quests that reward you with upgrades, all of which grant you more vertical mobility. Reaching the peak took me about 20m, it really is what it says in the title.