No. If you want to bye helmets go to the armory.
Two multi-player map packs. Noble Map Pack and Defiant Map Pack
Defiant Map Pack
March 2011
you must have several achievements from HALO 3 and HALO ODST. Along with certain achievements from HALO REACH. Then you will unlock the two helmets
You can download Anniversary Maps to Halo: Reach but not to Anniversary.
No.
They both suck dont waste ur money on them
Earn higher ranks online and more credits
no you can get it by paying 2,000,000 cr's for it
No, I'm sorry but you cannot spawn computers or laptops in halo reach. You may be able to on some of the Noble Map pack or Defiant map pack maps as I have not played them, but I doubt it as well
Technically speaking, all the helmets in the armory are Spartan helmets. If you mean the specific helmet worn by Master Cheif in Halo 3, the MJOLNIR MK. VI, then that costs 300,000 credits.
You can unlock Helmets... For everyone in NOBLE team apart from NOBLE 6 (who you play as)