You Are Hero Core. You Make Me - Er - Hero.
Mr Perkins pointed me in the direction of the newly-released Hero Core, from Daniel Remar who you may know from Ilj from a couple of years back. It's the sequel to Hero, and I loved it within seconds of starting. A sprawling, non-linear shooter which will recall either old-skool NES or old-skool Ultimate: Play The Game, depending which side of the Atlantic you're on. If you're from elsewhere... well, you tell me. Go gets! Trailer follows.