A movie about aliens that turn humans into zombies sounds just crazy enough to potentially be fun. But the execution is rather poor and the characters are not very well developed or likable. So I really didn't find myself caring if they were killed off or not. In fact I actually wanted most of them to be offed.
For example, the story begins with a bus full of university students on a field trip to observe meteorites. Most of them are jerks who act like they don't even want to be there. Several of them are relentlessly making fun of another student for being Mexican. Yes they're literally making fun of someone for their race/national origin. Who does that? Shamelessly right in front of everyone at that. Most of the students either participate or raise no objections. I'm no SJW but it struck me as quite bizarre.
I don't fault the movie for the cheesy special effects, because that can actually be part of the charm for many B movies. There were even a few scenes that made me laugh, especially the projectile hedgehog scene. My problem is that the writing was quite bad and random stuff would happen that didn't make any sense. None of the characters had any sort of consistent personality. They would do baffling things with no apparent logic or motive. Story elements are introduced without ever being fleshed out.
With this type of movie one must strike a balance between being comedically farcical and just plain bad. This didn't quite deliver for me but it is watchable, if barely. 4/10 (seems like a star for each time I chuckled, Lol)