This is an assortment of missions that score your performance at the end, much like an arcade game. There isn't much of a storyline, but the gameplay is so finely executed and offers so much replayability that it's hard to care. It just feels spot on and even looks great visually. (Well to be fair I'd rather not have to use touchscreen to reload but I'll let it slide.) This is hands down the best Vita shooter. It's also a great stealth game even if it's only one-fourth of the game.