TL;DR:
Hey everyone, haven't been active here in a minute or two.... but I'm back with great news. If you are too poor or smart to own an Xbox One and have been missing Halo 2 PC, there's a great new project headed up by PermaNull and Tweek dubbed "Project Cartographer", bringing H2PC back online without need of a hefty tunneling service like Tunngle - just download the launcher and it's like XBC, but even simpler. It's in public open beta right now, but the games I played ran very smoothly.
Video isn't even close to serious/made with effort, I'm hella hella rusty in every department. Just a cute little PSA.