Spoilers for getting to Mt. Sus:
you can get to Mt. Sus from the in-bounds tutorial area!
A hint:
Thanks so much for your reply! I accidentally deleted my savefile, though, or maybe the update made it incompatible, but it shouldn't take too long to rescan the stuff I know how to reach.
I never thought of using
to reach a non-adjacent room (and the two Mt. Sus rooms that are connected to
aren't useful for getting to the main body of the mountain (i.e. where all the clouds are, and the top of the waterfall you see when double jumping up from 3.8). That said, the party house redesign seems to have