No, only Oddball.
They are skulls. idiot.
No you can't.
You can if you are playing offline or a custom game, but skulls are removed from the maps in matchmaking
as part of the release of Halo Combat Evolved Anniversary a few maps for matchmaking were released for Halo Reach I think the dlc is about 1200 Microsoft points
You can download Anniversary Maps to Halo: Reach but not to Anniversary.
i do belive there will be a forge to make maps like Halo 3 did.
there are many unlockables in halo, there are:-skulls, 1 to 2 on each level-armor changes, depending on what you do (spartan officer, all skulls...etc)-katana or sword-on-back, 1000 gamerscore (from halo only)-maps, heroic maps for 800gamerpoints not score (new legendary maps coming out)that's about it if you want specifics on armor requirements Google itthese are about it.....
The Halo Reach Beta will include four maps. You can read about them here.
There are some in Halo 3 ODST.One on Heretic, one on Longshore and one on Citadel.These maps are the new mythic map pack.
you cant >:(
Yes, you do.
you go to recent maps if its not their then its gone sorry.