I had played BioShock 2 for "Games for Windows Live" on my laptop and I've unlocked achievements.
I recently purchased BioShock 2 for the Xbox 360 and I played and unlocked achievements on it as well.
I assumed that the achievements would be cumulative for both Windows and Xbox 360, however, it is not.
I have two different entries for "BioShock 2".
The Windows Live entry has 175G/1380G unlocked and the Xbox 360 entry has 1040G/1400G unlocked.
Is it possible to have the Windows Live entry removed from my account and reduce my gamerscore by 175G? I no longer use Windows Live games anymore, and it's a tad annoying having two sets of achievements in the list.