This is really cool, I just gotta commend you for it. It really captures the spirit of this jam, your expertly distilling the theme to its core and expanding upon it to a razor sharp end with minutes to spare.
The tiniest thing I could suggest, with the greatest returns, would be to devote some of your prep time (i.e. BEFORE starting the timer) to settle on 1) a palette, either from inspo reference or from the game dev palette website; and 2) potentially a mood board to guide your design. A little bit of vis dev goes a long way!
Of course, the "mad dash" look of the current visuals does have a certain charm. It was also wise of you to allocate the most effort to the demon's face, which is thoroughly striking. Great work!