A Bikini
(Upgrade has to be purchased from store)
Yes
You can in HALO 1 if you use mods, but it has to be on the computer.
As of now the Halo: Reach beta is gone, your not going to be able to.
Not without using mods.
Yes But You Will Probably Get Banned
ur vajj
no but there might be mods where you might be able too maybe halo reach will let you
Mods are against the rules and conditions
If You Mean change into elite, no, you can only do that in Halo 2, 3 and Halo Reach. But however you can use mods at halomods.com
yes to do it you must open you Xbox rip out anything that looks important then, send it to Microsoft. After they receive it they will preload mods for halo reach in there for you.
unfortunately without mods, it cannot be unlocked :L
first, in halo, we have ranks, not levels. second, to reach that far, you just need a time-stop, a bunch of noobs to play with, legendary skills, and 5,000,000,000,000 pounds of awesomeness.