Mass Effect Discussion
As with that posting I take no credit for the discovery of information only the gathering an posting of it here. Link
This is the original ME thread were these were talked about.
Achievement List as seen in the 360 version. All should be valid "except" the point values are not awarded to your Xbox gamer tag. Link
And there is an FAQ/Walkthrough which should be complete except for then Bring Down the Sky expanded content on the XBox360 ME site here on CheatHappens.
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem