Graphics and music are great! I felt like playing an old atari game.
There are some glitches, you can stick at air if you jump to a wall sideways, or you can hook air. But it's a jam with limited time, of course there will be bugs. Although, those doesn't prevent anything in gameplay.
I found the difficulty a bit hard, you make a minor mistake, you immediately die. But that's just a personal matter, some people like that hard. So that's not a minus.
Great game, I liked it.