Halo 2 Multiplayer Map Pack

Gargoyle in Backwash:
Go to the big building in the middle of the map. Look above the doorway.
If it is not there, keep going around the building until you see it.

Hidden Message On Backwash:
If you jump up on the blue base and sword cancel numerous times, you can get
behind the invisible wall. If you walk forward and then follow the end of the
ground all the way around you will see the message written in red. The message
says "Its looking a little rough out here". There is also another spot on the
ground, to the left that the word "Here" appears.

Invisible turret in Sanctuary:
Find a turret in the Sanctuary and once you get to it, move away from it and
throw a fragmentation grenade and it will disappear. Go up to the turret and
"Click X to use the turret" will appear. You can now use an invisible turret.

 