I completed all three bosses. I mainly kept playing because of how good the "peaceful phase" music was haha.
Art is phenomenal as well, especially the bosses.
Perfectly incorporates the theme.
My critiques are I kind of just placed whatever plants I could afford everywhere without caring about their attributes and still ended up winning. I think if it was more clear what each plant did on the field maybe I would've acted differently.
I also would've liked if the quick time event showed up slightly higher so that the purchase menu didn't block the quick time event.