(artist here) thank you so much for the awesome feedback!!! I would love to know where the pixel art is blurry, just for my own sanity working on the game! (I don't know much about Godot but i do know we made it 'pixel perfect' meaning that there are only so many pixels on the screen, so idk where blur could be a factor.) I used a specific 20 color palette to achieve the old NES style, and I tried to make the character as bright with those colors, but maybe making use of some of the red or green could help make it stand out more. And yeah, your point about checkpoints is very fair, many of our playtesters have commented on that so we are definitely going to do something to fix the difficulty/add checkpoints. Thanks again for the wonderful feedback :3
The blurriness I'm referring to is that some of the main character's colors are the same as the ground, so sometimes they look like they're connected, especially when I'm looking at the road ahead and using my peripheral vision to locate the character. I think changing the character to a color that doesn't exist in the scene would be a better idea. Don't worry, your "perfect pixels" is perfectly fine! I also used "perfect pixels," although I'm using Unity.