The game is 100% broken, it couldn’t be any more broken than it is, it is just a menu to me, go to the playlist screen and logically i thought maybe i could play the game, NOPE, the A button doesn’t appear, clicking it makes a “DURRR” sound and selecting slayer breakout or stronhold does nothing. the game is 100% broken, i tried it when it first came out, tried it again today(jan 13/14) couldn’t get past the menu. it’s the most broken pile of crap i’ve ever seen, given the state of 343’s MCC I’m not surprised, I regret buying that and i regret downloading this through that, I will not be buying another halo game ever again. Thanks 343, suck a -Yoink- and die.
Hard reset is your friend, also check your connection.
most of us here have been able to play without this game breaking bug that wont let you do anything. surprised that you even make it to the main menu with that attitude. Please be patient, it may take a few seconds to load so don’t go throwing your One out a window because its “frozen” or “not loading”. Your parents payed good money to get you this for Christmas.
You want to know why it’s called a beta? You are meant to report glitches and bugs. xZero 13x even has a fix for you. 
I can usually play 2-3 games before a weird glitch starts to kick me out of the game search. Just calm down reset the game/console. So much anger of something that’s just annoying and BETA.