Mixed up

While it contains several outstanding scenes and sound effects (seismic charge!) to make it worthwhile, it is let down big time by an overload of boring politics, cringe worthy attempts at drama and awkward slapstick.

Brutally refining

A really sweaty and hardcore fighting movie with a deep sense of pain and tired bones. It is unpleasant in a way, but it is also spectacular, amazingly well performed and choreographed and a genuine new benchmark for brawling movies - that had been going nowhere until this came along.

A novel and well executed horror idea

A bold idea that works surprisingly well and provided a unique scary movie. For sheer originality I wanted to rate this higher, but for that it would have needed more than these unappealing teen characters and a slightly more refined plot.

Interesting look at an incredible machine

There is a slight overload of scientific superlatives on how important and revolutionary it all is. But with a device like that, and theories like that, and findings like that, I suppose they are right! Quite fascinating.

Manages to be ok

It's the same old adolescents , going to the same old cabin in the woods with the same old aliens. But there's a couple of scenes, moments and even performances in here that keep this movie in the green.