If you thought the gnome Achievement was bad, you ain't seen nothing yet. Black Mesa has two gnome achievements, a hat and a pizza. And the game is way, way longer. That's not to mention the portals, ...

Gnomes are devious, dastardly creatures. From peering at you out of your neighbour's garden to the notorious Half-Life 2 companion Gnome Chompski, the tiny troublemakers have always left me a touch ...