Nice cute sprites!
The first stage wasn't very clear, if there was something more to do than make sure they don't get stuck on trees, I didn't figure that out.
I liked the idea of equipping them for wave defense!
I'd recommend highlighting the screws that can be moved and putting the red fog on a layer below the characters so it doesn't obstruct the screen as much. I also didn't notice if there was any progression or if the waves were completely independent from each other.
Cool entry!