i'm genuinely amazed by the amount of labor, blood, sweat, and tears put into this game. it's clear this game meant a lot to you and it really shows here.
BTW to anyone struggling on Level 5, try walljumping a bunch on the wall before the really tight and challenging spiky part. you can pretty much skip that part by walking across the top.
Edit: Play Arnifright DX: The Quest for the the Stolen sword