Fantastic art style! It took me a little while to figure out what I was trying to do, but once I got it, it was a fun challenge.
I hit one bug where I got trapped inside a wall and bombarded with bouncing sound effects, and my army would occasionally flicker between two animations real fast when they were right up against a wall. Those usually resolved themselves after a little bit, but in particular when I got stuck it was a little frustrating, especially since time is somewhat tight.
I also think that, with the background being so busy, it can be a little hard to tell what's a platform and what is background; one thing that might help that would be to lighten and/or desaturate the background a little bit, to make the platforms pop.
Very fun little game, and a solid jam entry. Good work!