what the heck...

Not usually one to come here and blatantly complain but why did my halo reach profile partially reset? Like, i got the opening “welcome to noble team” message and 5000 credit bonus again, had to change my armor back to its actual components instead of the default (didnt have to pay for it again though), colors and emblem also, and then the one that REALLY pissed me off is that ive suddenly lost all my completed campaign missions when i was in the middle of doing another playthrough. So i had to start.all.over. What the heck happened that reset all this crap?

This is a known glitch. Personally I think it happens when you suddenly lose power or the connection to your modem.

Your save game was likely corrupted due to turning off your console while the game was trying to save a checkpoint or something. The only way to get your Campaign progress back is to play through the missions again, but it can be on Easy (unless you still need the solo Legendary completion achievement).

you know what i think it was what slashing arbiter said, i did do that because i was running a little pressed for time for getting ready for work. Thanks guys, appreciate it

Gotta love the irony here…OP has two thread on the front page. One is a thread about how no one on this forum does anything but complain…the other is a complaint thread.