Pro Speedrunner Plays Portal 2 Beta (July 2009 Build)

My playthrough of Portal 2's July 2009 Beta, aka "corehub", aka, build 852_0. As a disclaimer, I did not leak or illegally acquire this game, I obtained it through publicly available means. I will not distribute or assist others in finding a copy of the game, and I will happily take down this video at Valve Software's request. ►Streamed live at Twitch:   / msushi   ►Main Channel:    / @msushi   ►Second Channel:    / @m2ushi   ►Twitter:   / msushi_   ►Bluesky: https://bsky.app/profile/msushi.net 00:00 - Intro/Context 03:47 - Game Launch + Initial Crashes 07:40 - Singleplayer Campaign Playthrough 52:35 - Aquarium Discussion 56:58 - Playthrough Continued 1:48:57 - Bonus Maps Originally streamed 2026/08/31