[Reach]

Yeah that's exactly where I was stuck. Good to know it wasn't just me.

That puzzle is a monster. Definitely the hardest main puzzle in the game. For how little space it takes up, holy shit it's a mind bender. I concluded it wasn't possible to get past the second gate so I wasted eons trying get lasers into the complex from other levels.

Finally I was like https://www.youtube.com/watch?v=6ixvpLCdqkA&t=12s

and once I saw it my mind was blown. How they managed to find novel ways of using something so simple after over 100 puzzles worth of content is just astounding.