Very cool game idea!
At first I thought that the shadows would hide enemies. That would be a cool extra challenge!
And you absolutely need animations for your main character!
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Thanks for the feedback! With the shadows, I'm now realizing how big of a missed opportunity that was...
And as for the main character, I was planning on animating it eventually but didn't get enough time to do so; I was lucky to even get enough spare time to animate the enemies.
I'll definitely work on this game after the jam ends and will add both of these suggestions!