Half-Life 2: Episode Two has been out for close to two weeks now, so there’s a good chance most players have by now finished it. But did you truly finish it? You may have noticed that Valve included a whack of achievements to unlock throughout your adventure, and one in particular is a rather large test of patience. I completely l overlooked the garden gnome at the beginning of the game, but it appears a certain PC Gamer editor did not.
The goal is simple. Carry this garden gnome with you through the entire game, making sure to set him in the rocket at the end. Essentially, this means you will be protecting and carrying him around for well over five hours of gameplay. Sure it might sound difficult, but I’m willing to bet it’s a lot more tedious than difficult.
Obviously any time you know you’re going to be coming back to an area, you can set him down there and go off on your own. My tendancy to put him in areas where I knew something dramatic was going to happen cost me my gnome once or twice.
Source: James Blog