There is no other way to describe it than a triumph, but speedrunner icy has broken the world record for the Portal category of never actually using a portal. He nailed a trick early on in five minutes that he expected to take nine times as long as it did, making relatively smooth sailing for the rest of his run.
The run is fascinating to watch even aside from that trick, as icy manages to get through every nook, cranny, and seam in the game that lets him proceed without having to engage in what the game wants him to do. Were Aperture Science real, and someone was actually testing his ability to use the portal gun, I can’t imagine the level of frustration at watching him circumvent every single puzzle they set up.
Just a warning, icy talks along the video and says some profane and possibly offensive things, which he admits to trying to stop himself from saying. If you watch the video, make sure you’re aware it’s not very kid-friendly.