Oh wow! I wasn't conscient of the fact that the build just straight up had no background music. Regarding the colour accuracy, I wasn't aware of that either, thank you so much for bringing this to my attention.
Since I had focused on everything except the UI, which I kinda shoe horned in last minute, I didn't have time to add a death screen, and ended up just closing the game instead. I'm aware that this was probably extremely annoying now, but since I wasn't aware of the difficulty at the time, I didn't think it was much of an issue.
In regards to the hitboxes, I'll try to find a better solution for this, since the hitboxes were all... well, boxes. If there is anyway to constrict the hitbox more to the sprite, I'll find out how. For the canvas, I completely forgot that not everyone had the same screen size, so that was a major oversight in my part.
Thank you a lot for playing my game, even if it was a complete mess! I really appreciate your feedback.