It’s been almost a full decade since the Half-Life series last showed life, with the surprising, even shocking conclusion of Half-Life 2: Episode Two. And surely, we thought, Valve wouldn’t leave such a stunning cliffhanger untended for long. Surely, that heart-wrenching finale meant that Valve had a proper finish already cooked up, and the infamously long Valve-time waits between games would be a thing of the past.