HCEA achievements not showing up on my profile on the Xbox website

NO. Halo 4 comes out in 2012 and HCEA comes out 11-15-11. HCEA also comes with 7 maps for

Halo Reach

Hey mate, what's it saying on this website? xbox.com is where all our profile and achievement information is held, so when you re-download your profile to your console it comes from this website.

So if you're seeing those achievements not unlocked on the website, unfortunately I'd suggest deleting the profile from the console (profile only), clear the system cache, restart the console and re-download the profile.

Delete and re-download profile:
support.xbox.com/.../profile-move-delete

Clear system cache:
support.xbox.com/.../clear-system-cache

and it should download your latest profile from the website, the only thing to note is that if the achievement isn't showing on xbox.com you WILL have to re-earn that achievement(s) for it to show up again as normal. Hope this helps.

I know they aren't showing up as unlocked on the website. They're shown as unlocked on 4/6/13 on my console, but they didn't seem to register on the website. I unlocked three other achievements along with the ones that are missing on the same day and they're
all mixed up together, so I don't know why three of them didn't register on the website. I think it might have something to do with the DLC since all three of the messed up achievements are from the DLC, but I've unlocked other DLC achievements for the game
before and after the problem occurred, so I have no idea what's wrong. I tried running a connection test and signing back into my profile, but nothing changed. My achievements still show up as unlocked on my console, locked on the website, and my gamerscore
didn't sync with it either!

Hey there, so can you confirm that the achievement has been unlocked on this website (xbox.com)?

If it is, then I would suggest deleting the profile from the console (profile only), clear the system cache, restart the console and re-download the profile and seeing if the achievement is showing as unlocked after as your profile is downloaded from the
xbox website.

If it's not showing as unlocked on the website and you do the above you will loose the achievement, but should be able to re-earn it, but that will be your choice if you want to do that.

Delete and re-download profile:
support.xbox.com/.../profile-move-delete

Clear system cache:
support.xbox.com/.../clear-system-cache

I think this is the right place to post this. I recently started playing Castlevania: Lords of Shadow and I can unlock achievements just fine but when I look up the achievements I've unlocked on this website, it doesn't show up on my list of games. The last
three achievements show up on my profile, but when I go to the achievements page, the games not there. I also can't see my Ultimate Marvel Vs. Capcom 3 achievements but I think that has to do with Capcom no longer having the rights to Marvel properties anymore.