i think i beat the game because the rocks stopped spawning after some time. So if you actually put the rocks by hand, that's a bad idea for an endless runner, instead make the rocks appear procedurally. I don't like the fact this game doesn't have a game over UI, because this makes dying feel weird, as you barely can see which rock you collided with but need to straight up start dodging more rocks again, and you need to do everything again, what is kinda weird. Also, hitting a rock should give me a bit of a cooldown and invincibility, because otherwise is very common to hit a rock, hit another rock that is a few pixels away, and end up taking twice as damage for a single mistake.