Can't Connect to Xbox LIVE on Spartan Assault.

The second I unlocked the final achievement, The Company of Strangers, the game refuses to connect to Xbox LIVE. I even booted up Halo Wars to see if it was a connection issue, but it isn’t. It’s as though the game is throwing a tantrum knowing I will no longer play it.

To make matters worse the achievement hasn’t even registered on my Xbox One. When I load up the Xbox 360 achievement list there it is but not when I load up the achievement list on my Xbox One.

Update:

After redownloading my account the achievement has locked itself again. What a right pain. I can’t wait to be done with this game.