To preface my feedback, I try to offer as much feedback as I can for the game in its current state. I also try to offer feedback that's aimed towards continuing work on the project post-jam.
I like the overall concept (it has a Lemmings vibe to it) and am always interested in different takes on metroidvanias, but I feel the execution of the project needs more work. While you included tips in game, I really feel like this is the type of game that should have a guided/scripted tutorial before going into actual gameplay. It wasn't clear enough in the beginning I think, and that will scare away a lot of players.
I like the art. As someone with terrible art skills, I enjoy different styles as long as their consistent. I feel like you all did a good job in that aspect.
The music didn't stand out to me at all. It didn't clash with what I was seeing visually which is good, but it also bring attention to itself enough to enhance gameplay. If the music is an external asset, its hard to really find a song that fits the game you're trying to make. I know I always have trouble finding music that fits with my games.
As for the theme, I really didn't see how this qualifies other than the limited vision units have.
Overall, I think you may have overscoped your project for this jam. However, I think if you spend the next two months refining it based on the feedback you receive during this jam (this may already be your intent), you could really step up the quality of your game and have a solid submission for Super MVM 20. I wouldn't add any new mechanics. If the only thing you change is adding a scripted tutorial or something that eases the player into the full experience, I think you will have a pretty cool game and its one I'll keep an eye on and if its gets more work, I will play it again. Congrats on your submission and I hope you all continue working on this. I feel like I can see what you envisioned for your project, and if I'm right, it will be fun.