Nice! The art was simplistic but nice on the eyes and the music was very soothing. I like the concept of taking the story of Sisyphus and turning it into a fun minigame. I might've done something wrong but after I got to like 500 points, the enemies stopped dying to the boulder and they just stacked up in a line, so that was as many points as I got. There were also runs where my boulder disappears, so maybe you could add some way to reset the boulder in case something like that happens. Still, though, I thought it was a pretty fun game. Good job!