Summary: This game is incredibly simple. There's nothing more to it then blowing things up. You'll be able to attempt missions, which as you can guess, involve blowing up boats and land structures, escorting friendlies, and err, blowing things up. So yeah, the missions aren't really that varied, you'll just experience bigger and more frequent enemy boats. That's not to say that it isn't fun though.
Summary: Fairly repetitive game where increasing difficulty comes with more and more opponents at the same time. However, good for a quick thrill and the quest to unlock the next boat or level is quite addictive in itself. As per one of the other reviews, many of the primary weapons (e.g. chain gun) have inexhaustible ammo and have auto aiming, so there is an aspect of just wanting to put a rubber band round the firing trigger!