The visuals and game juice are really nice. Also the SFX and music match the theme.
My feedback is to make the game discrete and forgo the continuous rts style. The rule set is more suited towards a game like plants vs zombies and I think the experience would have benefited from that.
In terms of content I would come into the practice of expanding content with a rule set. I know there isn’t a ton of time, but expanding content from a ruleset is something that you can work on.
Dripfeed mechanics to expand levels and content. It would serve as a tutorial and a way to facilitate flow
It’s great that you were able to get this published on Google Play! That’s a big step forward.