There is a puzzle in the original Portal that you can solve by stacking up a bunch of cameras. For the longest time, I had always done this and never attempted to properly solve the puzzle.
Somewhat surprisingly, I’m not able to quickly find someone doing it on YouTube, but it’s the puzzle where there’s a cube propping open a wall panel where Ratman was. There’s several cameras in there. If you take all of the cameras and your cube, you can basically make some janky stairs and climb your way up to the next section.
It can be done way easier than that! You can just bump a portal through the glass and skip to the incinerator.
Here is an alternative Piped link(s):
bump a portal through the glass
Piped is a privacy-respecting open-source alternative frontend to YouTube.
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Thats not the only puzzle that can be solved outside of the intended solution, either.
how did you learn this run? I love portal and it looks like a real fun run but I’ve never speedran anything before and don’t even know where to start.