I feel like the size of the moon is part of what makes the puzzle difficult and is part of the game, but it is true that the indicator can be misleading, and i will probably fix some of that at the end of the jam, and maybe reduce the moon's hitbox. If you enjoyed the music and are willing to spend some more time listening to it, i'd suggest going back in the game and skipping al the levels to reach the final one, and then using the cheatcode left-ctrl + t + e + n + d. It's a bit hard to pull off in the browser, because ctrl + t opens a new tab, but if you hold the letters first and then add the ctrl it should work. Use it after the fight starts. If it worked, you won't be able to jump and you can go through walls.