As you probably know, along with Halo 3 ODST came 3 more multiplayer maps for Halo 3 (on a disc with all the maps). With those maps, came 3 more hidden skulls, and you can finally complete a few achievements in Halo 3 that I’m sure has been bugging a few of you. Now where are these skulls? Let me show you.

Citadel

Heretic

Longshore