So, after my first ever rage quit incident the other day... I actually completed Halo Infinite Campaign yesterday evening (whilst waiting for my missus to get ready to go out and celebrate our anniversary).
Annoyingly I did it the first time as well. Quite different to the other night where I was stuck in a rage quit loop for 3 hours. I can now try it all again on Legendary (and to get a few more skulls). Interestingly I only used the grappleshot as well thinking back. I haven't used any of the other equipment types (such as drop-shield, vicinity locator, etc) despitefully max-ing them out. I also completed the majority of the FOBs and peripheral stuff before embarking on the main story elements.
I really enjoyed it but I just know Legendary will be an absolute b*tch!