I have a problem with registering achievements for the episode 4 of the Walking Dead game. When I played through this episode, all achievements popped up as usual. However, on my Xbox.com profile it shows as if I did not unlock 3 achievements from this episode. Now, when I go to achievement list by pressing XBOX guide button, it seems they are all unlocked! I actually downloaded episode 5 yesterday and got all achievements for that so surely there must be some sort of glitch with episode 4? FYI I replayed episode 4, but it didn't resolve the issue. Any advice?