I'm pretty much echoing others' comments. There are some really bad things about it, the constant crashing was the worst. However it's almost always at a cutscene so I rarely lost any progress. The story line has interesting things about it but also a lot of plot holes and a few clichés thrown in. The controls take a bit of getting used to but by the middle of the game you should have no problems with it.
The gameplay does get a lot better the more you play it. It's an OK 3D shooter but it really is a lot of fun once your powers start emerging. You aren't going to spend weeks on this game and it doesn't have a lot of (immediate) replay value but it is intensely fun for a short time.