Some channels may have Spoiler Vid titles

Some Youtube channels have halo 5 campaign videos that contain titles with spoilers, I think.
Here is one title from a channel.

Halo 5 Guardians Walkthrough Gameplay Part 1 - Cortana - Campaign Mission 1 (Xbox One)

I’ve seen missions 1,2, 3, and 8 from RUL and honestly I haven’t seen much that we don’t already know.