The only way to restart an online profile is to make a new XBox Live profile. Deleting the memory off of the harddrive will only delete private match profiles.
No.
no because once you go online you will start back from level 1. no emblem, no callsign, no unlocked guns.
10th prestige Level 70 as Online and Offline have the same level and prestige Caps.
The fourth level in Call of Duty Modern Warfare is No Russian (which can be skipped.)
Level 42
wasteland is a map online in call of duty: modern warfare 2 ( loads of people camp in the cave so you better use a grenade launcher to launch in to get a few kills?)
Im not sure why it corrupts. Im sure your talking about your split screen accounts. I had very high level ones, and they went corrupt. DO NOT DELETE THEM IF THEY GO CORRUPT. When you get online, the magically work again. Idk why or how but that's what worked for me
nothing
you have to be online to level up in multyplayer.you can level up in splitscreen and system link seperately if you play xbox become my friend message me telling me that you found my gmertag in wikianswers gamertag is Steeler12345
The Lieutenant Rank is at Level 34
You unlock it at level 36.
Level 38