Summary: It's on rails and you pretty much just hold the trigger down constantly while moving the cross-hairs. The bosses are pretty much impossible until you figure out the trick to beating them. The story is pretty thin, but that's not what I was interested in in the first place. Basically, your hand will hurt and you will get bored of the repetition after a short playing time. They could have made it a bit slower paced and more suspenseful.