Doom: The Dark Ages is here, bringing a brand-new campaign full of demons for you to rip and tear through. The third game in the modern Doom trilogy, Doom: The Dark Ages is a prequel, taking place in a more medieval time period, meaning your guns and weapons have a certain retro quality to them, like the new melee weapons and the new shield. Of course, there are still lots of guns and plenty of fast-paced shooting. Doom: The Dark Ages features a single-player campaign, and here's how long...