First of all, great game. Excellent graphics, sounds, music, game concept! All very polished. I've seen a couple other people mention it but I think the "jump higher" note is misleading to read before you figure out how to dash jump. The problem is that it's not easily apparent how to dash-jump or that it's even possible before you read the note saying there must be a way to jump higher. This makes the player look for a way to jump higher instead of looking for another place to jump. Perhaps the first few rooms should be more linear with less Metroidvania "gates" so the player can learn the all of the tools he has at his disposal before being introduced to the gates like the too-high ledge... Either way, nice job! I look forward to seeing what else you come up with!