Anyone else seen it? We picked it because it was about to start. Never heard of it at all. The little theater it was in was freakin packed. It wasn't bad Sci Fi at all. Even if it was a spiffed up B movie. Sort of a Ex Machina mixed with Deathwish and maybe a couple more, including some aspects of Grindhouse (violence).
Saw it last week. I really liked it. Your description was pretty accurate.
"It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts." Sherlock Holmes