30 new achievements were added to Halo 3 today on Xbox.com including the 6 new Halo 3 skulls we mentioned in a recent post.

Among the achievements listed on Xbox.com are the Assembly Skull, Citadel Skull, Heretic Skull, Longshore Skull, Orbital Skull, and the Sandbox Skull. Each unlocked Skull achievement will tack on an extra 25 points to Gamer Score, and an extra achievement for finding all of the skulls will add another 25 points for a grand total of 175GS.

It’s still a mystery as to how these skulls will be implemented, but it would seem as if they might be integrated into a new series of maps dubbed “Mythic” based on achievement descriptions on Xbox.com. Bungie has remained silent in regards to these additional achievments so far.

Despite all this, the talk in the Halo Community has largely centered around two recent featured postings on Bungie.net, featuring the Super Intendent that we saw back during E3. In the most recent posting from tonight, folks were left baffled by a vague and interesting dialogue.

Here’s to hoping we find out more about all of this Tomorrow when TU2 goes live!