Posted on 11 July 15 at 14:10I accidentally selected then signed in on Facebook. Then backed out and connected through Xbox. Was level 26 but received achievements for level 50 &level 100. Hopefully this is a glitch that helps others
Posted on 12 July 15 at 11:09It's a glitch that occurs if you played the game before the last patch and then after it, i.e now. A lot of people got the 100 achievement without being so. Unfortunately it doesn't work for new players.