Another case of Could Have Been So Much Better, here, I'm afraid.
Without a seemingly real beginning, the audience is thrown into the action not caring much for anyone or having any real concept of the environment, its trappings or the perils within, only to instead wonder what happened to the rest of the so-called "elite" unit that is suddenly just four bikers and a former spy.
I'd like to think that 20 minutes from the beginning were sacrificed due to budget restraints meaning that the film was either spat out as is, or left forever incomplete, but others reviewing this may prefer to cuss the writer-director, who did show moments of a brighter future (if given more money).
Yes, the film does feature a hot blonde who can actually act, and the former spy is a decent-enough character to maintain interest, so as it progresses, the film does prove to be somewhat rewarding, but that lack of seeing the elite unit go through the entrance of the compound to give us an idea of how cramped and isolated it really is, of seeing the rest of them wiped out to amp' up our fear for the few surviving on the lower, more dangerous levels, really takes a viewer out of the film before giving one much chance to get into it, and that is a shame.