It's oddly charming seeing L4D2 survivors in an environment from L4D1. From the screenshots alone that gave massive No Mercy and Death Toll vibes, I was already prepared listening to one of Francis' rants and Zoey retaliating. Until I was taken aback by seeing Coach instead (he's wearing Max Payne's outfit), I have never been more pleasantly surprised. Yes, I am aware this is a L4D1 port, but things like these sometimes change a lot to fit L4D2's aesthetic instead.

The whole campaign made me feel like as I was playing an official DLC. The maps looked exactly like how Valve would do it from the lighting, the detailing (but not enough to take your attention from progressing), the length, weapon spawns and what tiers would appear, and even subtle cues from the environment to tell you where to go. There are no bugs, infected spawns exactly like how they would officially, SI too - and they aren't a hindrance to progress.

If there's one campaign that should stay in your subscriptions forever, it's this one. If you told me a Valve employee made this campaign, I would believe you (however if that really is the case then colour me surprised).