Thank you for playing the game! It's hard to balance boss fights when all you have for testers are the devs, who test it over and over again, and so get really used to the patterns. But we plan to put a balance patch out before the end of the editing period.
Could you elaborate on the climbing mechanic? Currently, the way it works is that each time you kick off the wall, your wall jumps get weaker, until you touch the ground again. Or were you talking about something else?
As for the boss fight, by one shot, did you mean taking one heart, or killing the player? Because we thought that we had already removed the pitfall combo.
When it comes to the boss, we are tweaking his hitboxen to make it easier to get close.