This was a great take on the "edit the world to play the game" concept. I really enjoyed it! I think I would love to have persistent changes, like, not having to set double jump every time you change scenes. Also, I got stuck trying to figure out the wall jump bit... I'm not too versed in Javascript so, I was hoping for a bit of help. I did crash the game (or it appeared to crash) when I changed the enemy to friend while speaking with another npc. Overall, really liked this concept and enjoyed the game! Will go back to later to try again!
Great work!