Despite it's repetitive and simple gameplay and a fairly short campaign I really like the art style for it.
It has an old school feel to the play, quite linear and you can tell that the developers were going for that feel. Th plot is fairly ordinary, so be aware that story is not what's going to keep you playing it, it's fairly too simple and not well written.
You can upgrade your suits and purchase new weapons so you can be more damaging, let's put this way. To get all of them you'll have to play the game more than once, which you probably will not be inclined to do. The reason is because there's not much to do or to come back for. I can only recommend this game for somebody who likes a great style while shooting and probably like the beat of the music.