So much for a 'different' shooter.
Its main problem is that it tries too hard. There is amazing graphics here, big energy blasts, cool enemies, stylish kills, lots of weapons and etcetera. But all these things are secondary (at least, to me) to good solid gameplay, and a story. I know most shooters have ordinary stories, but this doesn't have one at all. There is also too much swearing here. It doesn't make a big difference, but is it necessary? Its just another bit of evidence that this game tries too hard to sell itself.
It has a few appealing things and I would say for the casual player its worth a buy due to its humor and high production values. A more serious player will have to look elsewhere for a good shooter.