Déjà vu Causes Death The new featured campaign is City 17. If it seems familiar, it should, it is based on Half-Life 2: Episode 1. While it is may be lacking Gordon, Alyx, and Barney it’s not lacking zombies. And no, they aren't your head-crab induced zombies, these are full on Left 4 Dead 2 zombies. More...
Turns out this campaign is really, really awful. Literally, they took a few of the HL2 maps (the worst ones may I add), added l4d2 entities and coded in a poor finale sequence, and called it campaign. It's really awful, do not recommend even if you really like Half-Life as I do.