Aside from decent CGI and good props, there is nothing praiseworthy on this show. The actors did their best with the bad hand they were dealt.
A bland, stereotypical high school drama cast with the class clown, the bully, the nerd, the pretty clique girls, the good class monitor, the fat nerd who is best friends with the wimpy kid protagonist, and the gorgeous love interest who is inexplicably interested in the protagonist.
The show skips over every major emotionally impactful scene, never leaving them out long enough to dry and develop the characters. Every character is a watered-down version of their stereotypes, but all share stunted flight & fight reflexes. No one has leadership qualities, no one has useful survival skills, and no one has a proper incentive to move the plot forward. Every high-stakes scenario is a result of a moronic mistake, the story is entirely driven by reactionary decisions.
The setting is unoriginal, and because of the way the monsters appear, they are the opposite of deus ex machina: they show up only whenever things get boring, and the writer needs to keep us engaged.
Within seconds you'll get tired of the students screaming and frozen in shock over and over again whilst their guardians are slaughtered one after another by 1-hit-kill creatures.
There is also a lot of mediocre camerawork done by drones, judging from the results, either they ran out of budget for rigs and instead used area shot techniques for wide shots, or they got itchy and wanted to experiment.
They tried to replicate the Hulk (2003) style of editing, adding black bars to split up the screen during montages to create comic-like panels when they should've just jumped cut till the end...
The plot holes are also everywhere, but I suppose they are the least of our concerns when everything's a crater. The most glaring one would be the army's distinct lack of communication devices, not even a walkie-talkie in sight. I won't discuss the senior year high school draft. It's the setting, I can't be bothered.
A paper-thin plot line, a bunch of lacklustre characters, zero opportunity given for development and for us to empathize, cliche stupid sacrifices everywhere, the list of flaws go on.
To those who dared to compare this show to All of Us Are Dead, all of you are dead.