The secret tiles can be seen here [First 11] (Thanks Kirsty)
You can read the descriptions of the secret achievements here: (Confirmed legitimate by Mike Bendel at Exophase)
Updates / Q&A:
Regarding the differences in some achievement descriptions between the screenshot and the source website:
Some Xbox 360 achievements have a locked & unlocked description (when you earn the achievement on Xbox its description changes) like a past and present tense if you will. x360a mistakenly posted the 'unlocked' descriptions first and I managed to print screen them before they changed them to the 'locked' ones. The new descriptions on the site are what it will say when the achievement is locked and the ones in the screenshot provided, that are different, are what they will change to when 'unlocked'.
Secret achievements hidden but everything else revealed?
Secret achievements are almost exclusively only ever revealed after a game is released. Secret achievement images are not always stored in the same directory at Microsoft as the others, meaning they're usually harder to find and sometimes not found until the game is released and the community unlocks and uploads the images for us.
- Secret tiles now uploaded, check the images above.
- Link for supposed secret achievement descriptions added.
- Source confirmed as legitimate for the secret achievement descriptions:
- Exophase has now linked the secret achievement images to the descriptions (changed link accordingly)
Edited by Kirsty, 25 August 2013 - 03:43 PM.