Hey everyone, this is my first topic/thread on the forum, and I'm happy to be here ^^ (Making my intro thread later, it's 4 AM and I'm just chock-full of energy! *sarcasm*)
So very basically put how I understood it is that you get XP for doing things like killing opponents, headshots, capturing flags, destroying vehicles, etc. It's unknown to me or I believe most people whether you'll lose them after losing a match or not, but it can be inferred that you'll lose them if you quit a match.
Spartan Points, (just a placeholder name for now) are either gained how Credits are in Reach, or after every time you rank up. If they're gained how Credits were, then it's possible that gaining SP is an optional way to rank up. I believe that it may or may not be optional to rank up by getting enough, but I don't think it'll be like that. Even if it were, I'm sure most of the Halo veterans would choose to rank up with XP, including myself.
That's all for now, I hope that this little bit of a post helped some of you that were confused. Also, if you have anything to add, please do so. One more thing, I would like to refrain from flaming or bashing of any sort on this thread if possible. I do not intend to advocate that kind of behavior, and this thread is solely meant for discussion and helpful purposes. Thanks for reading ^^