You have to admire the people who put together 'Experiment 7'. It's nearly so appallingly awful that it comes full circle to achieve cult status. But not quite.
Oddly, the plot and script are actually no worse than many big Hollywood movies: post-apocolypse mutant zombies, isolated scientists trying to find a technological fix-all, do-or-die nihilist macho warriors, girls in big boots with big guns and tight tee-shirts. Some of the dialogue is even pretty snappy (like the Angelina-lite heroine describing a tart's bath), and the self-conscious satire of action-movie cliches might have worked in a more polished production. Even the ending is unusually creative -- if you manage to watch the first 80 minutes then hang on for the final 10 because there is a small reward for your dedication!
However. Don't think for a minute that this is a good film which you should actually buy. It's not. All the creativity and wit in the world cannot compensate for third rate acting, wobbly sets, an incoherent plot filled with pointless yomping hither-and-yon, desperately bad make-up and FX, wonky filming, dreadful dubbing, a frenetic foley artist and improvised dialogue devoid of any merit. Oh, and the title presumably refers to how the film was made; it has nothing whatsoever to do with the plot...
We couldn't figure out whether 'Experiment 7' should be considered a kitsch satire (a bit like 'Rocky Horror' but without any of the good bits), or whether it's just an appallingly bad B-movie.
Rent if you must.