It took me so long to play this, sorry!
I feel like the first level should be a tutorial level. Some hand-holding to help the player figure out the rules and intended way of playing. I'm going to be honest, it was quite hard to figure out what you need to do for each level. Which isn't necessarily a bad thing! A bit of challenge is good. But let's give the player the tools to handle that as well.
I'm sad it's only a top down view at the moment. Would love to see this more isometric, so you can show off that art a bit more and get a greater sense of space/depth!
Really good job overall, all!
- Sam