You have some extremely high quality graphics here, which is really impressive considering that this is a jam game. The reflections and glow look absolutely beautiful. The concept you took was also quite interesting, even though that controlling two characters was a common take I think you've made something a bit more unique here as you've got more interactions you can take between the two characters, which fits the theme pretty well.
Although the graphics are extremely high quality, the gameplay suffered a bit. My computer isn't too good at running graphic heavy games, so it may be just that, but my FPS was extremely low throughout, making controlling things very difficult. I think jam games should be the most accessible, so maybe next time you can find a way to achieve good graphics while also maintaining consistent gameplay. The controls also took some time getting used to; I prefer controls where the character almost immediately stops when letting go of a button, allowing for the most precision. Lastly, some of the box physics needed to be tuned (The crate you can use in the earlier levels); a simple push can launch it to any direction, which was very unpredictable.
All in all, this was a very visually pleasing game! With a little more polish and focus on the gameplay, I think this could be expanded into something really fun in the future.