Fantastic entry, probably my personal favorite in the jam so far. Aesthetic is fantastic: crt effect, lava lamp background, particle effects on death/win, squash of the player sprite on dash, squish of the player sprite on fast fall. I could go on and on. 5/5 on visuals easy. Background song and sfx fit perfectly. Difficulty progression feels very natural and fair, I think the play testing with your friend was a great decision and paid off in bunches. Really liked your interpretation of the theme too. The player controller feels very tight and there is a high ceiling for skill expression. The transition of the new level spawning in looks excellent and well-polished. Not much to say, every thing was well done and highly polished. The only suggestion if you continue to develop this game would be to add some kind of narrator/lore. It doesn't have to be anything too crazy but a sarcastic narrator like in Portal or Will You Snail? or some kind of environmental story telling with props in the background would add a lot and take the game to the next level imo. Really great work and you should be proud of this, keep up the good stuff!!