If you survive the first 40 minutes or so (of introduction) without falling into Morpheus's gentle and comforting arms, you get a pretty standard "horror" flick with some monsters, lots of stupid decisions, in the end I rooted for the beasts. The Tank tries to be something like The Descent but can't compete on any level - production, story, thrill, acting, everything is inferior to The Descent. The premise of The Tank is not that bad, maybe even interesting, but the execution is, well, just boring. Recommendation: if you want to really waste some time (like I did), maybe with the notion that you are immortal and you have a lot of time to waste, put The Tank on your menu, if not, watch something else.