If you have a PS4, then here's how to play a decent FPS (apart from Killzone) on your Vita. It looks and plays fantastically (assuming you have decent WiFi), and has decent Vita control settings to make up for the lack of buttons. I still dream of a new PS4 Portable with all the buttons and a HD screen, but until then enjoy this. And, if you don't own a PS4, time to start saving or begging for Christmas.
c/o Marc the Geek