It's nice to see these updates pop up in my notifications every now and then.
I always enjoy seeing what you work on~ xD
Remember, if you ever want to chat or throw around ideas I am here.
Now for some feedback:
NPC Location/Story - This is where it helps to have a rough Timeline sketched out. If you have an idea of how the player could progress through the game and know why a particular NPC should be in the area it will be easier to make it happen, or find a work around. If a NPC is NEEDED for a particular section, then either find a way to gate that section behind a requirement that only the NPC can fulfill or make alternative ways/reasons for them to be there. ;)
Walljump/momentum loss - this could be partially solved by transforming the horizontal momentum into vertical momentum up the wall at a lesser speed. (You could potentially give downward momentum instead and let it turn into a slide by holding down a button upon contact?)
That's all the feedback for now.
Take care!