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
No. If you want to bye helmets go to the armory.
if you want the blue flame sign in at bungie.net and subscribe bungie pro. but know if you have a iphone/ipodtouch you can turn on blue flames and it will pop up in armor effect. but if you want normal flames buy legendary edition of halo reach.
Earn higher ranks online and more credits
its weird but yes
no you can get it by paying 2,000,000 cr's for it
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.
Depends on the Halo you're talking about, if you mean Halo 1 or 2 then it will be a small blue pyramid and in halo 3 it will be a floating blue sphere and in Halo Reach it will be a armor ability
halo reach
You can unlock Helmets... For everyone in NOBLE team apart from NOBLE 6 (who you play as)
You cant any more:(
well i don't think you can get clothes but, halo reach gives some helmets for your avatar