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Fisrt you must make sure you have Xbox Live Gold. Then go to matchmaking, and in any playlist, reach the rank of Private (don't worry, it isn't hard). Then go to settings (press start) and go to appearance, and you should have the ODST Helmet! Congrats! Also, you'll know when you get to private when you get a achievement and get a note.
What else can I help you with?
How do you make a Halo 3 recon helmet?
you have to be a bungie member.
How do you get the security helmet in Halo 3?
You have to get 1,000 gamer score on Halo 3.
On halo how do you get a marhon helmet?
In halo 3 you must get 950 Gamerscore.
How do you get halo recon?
the recon helmet for halo 3 is unlocked by completing all of the vidmaster challenges in halo 3 and halo odst
How do you get rogue helmet in Halo 3?
you have to have odst and it comes with an halo 3 mythic multiplayer disk and you get it with that
How old do you have to be to have the recon helmet on Halo 3?
16.
Can you get security helmet and katana on Halo 3 if you have 500 gamer points on Halo 3 odst and 500 gamer points on Halo 3?
No all 1000 need to be on halo 3
How can you make LEGO Halo?
You can get a normal lego figure paint it white then make halo armor and add a lego alien police helmet (blue one with adu on it) and then paint that white and paint a halo helmet
How do you get the Halo 3 helmet in halo reach?
rank up to brigadier and buy it for 300,000 credits.
Can you get ironmans face as a helmet on Halo 3?
yes its a glith!
How do you get the EOD helmet in Halo 3?
Beat the game on legendary
What do all of the skulls do in Halo 3?
THey get you an achievement, and they get you the Hayabusa helmet.
