I just finished watching the movie, and I can't say I liked it.
First problem: it suffers from a really bad case of plot over character believability. You know when a plot device requires a character to do something stupid (like the gang splitting up and going off in different directions in a horror) or
not do something obvious (like ask a really obvious question)? Well this movie was full of such moments from start to finish - and I mean literally start to finish.
Second problem: the start of the movie presents a mystery... which is never explained! It's just completely ignored for the rest of the film, like it never happened in the first place.
*SPOILER START*
I refer to the vision of a dark-haired woman, first in the base, then outside the space buggy. This vision causes the driver to crash the space buggy which ultimately breaks the cycle. The robot says to the corporation that "the circumstances of the crash are very strange" or something to that effect. So, who was this girl? Why did Sam have a vision of her? Why did none of the
other Sams have visions of her? Not only is this mystery not answered, it's not even mentioned for the rest of the film!

*SPOILER END*
Third problem: the pace is unbearably slow. It's like they had 15 minutes of material and stretched it out for 90 minutes. The whole story could actually be told, without much summarising, in 15 seconds flat.
Baaaad film.