This game has pretty good visuals and music. I like that you used comets in order to show where the humans and zombies are. I can kinda see where you are coming from in terms of "Collaboration with AI.". I like that you added the mechanic where your zombies can get burned by the sun, and that you have to hide them in the ground. It definitely adds more challenge to the game.
However, the game wasn't really easy to understand, it took me multiple tries in order to actually make progress in the game. I did find some bugs (for e.g. you randomly get teleported to the top and you need to close and reopen the game to fix it, or that there are trees spawning in the lakes.)
(i couldn't upload the second picture for some unknown reasons).
The UI could be a little bit better.
But to summarize, this is a great game. Well done!