So Today after learning about the exclusive skin codes you can get from the mini game to get one. Once I got the code I didn’t work for me so I contacted xbox support and was talking to them for an hour only to be told to try and get another one. I created another twitter account and got another code. This code didn’t work either and I really want one of the exclusive skins but the codes don’t work.
There’s more info about the codes in this FAQ post by ske7ch:
https://www.halowaypoint.com/en-us/forums/38bd6e2ebbb14e5b9b359bb029588800/topics/twitterhalowars—faq/8c95091a-5bc7-443a-973d-33926db8d309/posts