Due to that XBOX ONE achievement system runs on a server base. Press the view and menu button to get mini guide of XBOX 360 show up. I don't know why Xbox removed offline achievements on Xbox One but it's completely ludicrous.So I played more and unlocked about 5 more achievements adding about 50 more gamerscore and it was doing right and all of them was showing up.when I restarted my 360 it went back to only 8/50 with 140GS.. Another thing is when I check my gamerscore on the Xbox guide & Dashboard it shows my gamerscore correctly, but when I compare games with another player or check it from the "Completed Games" blade it shows it about 300 points less than the other.Check this out It's been going on for 4 months nearly and Microsoft has done nothing about it. I am playing Space Channel 5 Part 2 and when i click achievements it shows 3 out of 12 complete.There are currently 3,254,727 forum posts across the 7,632 forums.
It's a complete mess right now and Microsoft are either ignoring it or haven't got a clue how to fix it. I unlocked a 25G achievement in Peggle 2 and TA says i have aswell.But the 25G wasnt added to my Gamerscore earlier today I got an achievement in Contrast and that was added and updated.Anyone who doesn't want to or can not connect to Xbox Live is being duped out of part of the basic service of the Xbox console.It is completely unfair and I think the ability to unlock achievements offline should be reinstated as soon as possible.