I have to grade on a whole new level, now
Compared to most things, your movies are out of their league. Aside from problems in the earlier ones with extremely annoying repetitive sounds, and a few technical things. By the way, if the atmosphere generator-thing was destroyed, wouldn't that mean there would be no atmosphere instead of a non-toxic one or... something bad, anyway.
And about the zombie nudity the previous guy brought up: no problem with that but a suggestion: something not as overused as a naked woman's body that looks like it's been drowned. Women zombies can have tattered clothing too. It adds realism... well... as real as zombies can get anyway.