For indie? 9.5 / 10
It has moments of weak dialogue and awkward interactions, but again it's indie. Realistically there would be more survivors and more panic earlier into the events of the show, BUT all of that requires more extras & more budget. If you can focus on the story and not pick apart the fallacies, it's honestly pretty good. And I honestly find the indie style more refreshing because they have to really work with what they got instead of VFXing everything & all the fancy camera shots that have become standard in action sequences from bigger productions.
Video is the most expensive form to produce stories, and when critiquing shows - especially one's w/ indie budgets - you have to give some leeway for funding limitations. It's why most indie media is short form movie so there's less time for the viewer to see the where little things start to not add up. Like a lack of extras wandering around screaming about how their loved ones aren't waking up.