This is a great little game, if the reference is intentional (and I have a strong feeling it is) then congratz you made me smile! thank you for submitting this!
I will try not to critique much, as this feels like it was done quick, and without a lot of experience (I COULD BE WRONG) but regardless of experience, consider grabbing some royalty free music out there, people pour their hearts into it, but also consider enlisting the help of other people from the jam! I saw people asking to make music for games, why not let them have a go? I like the color codeing of the enemies, otherwise they would have been very difficult to understand without a lot of observation!