Yes
In Black Ops, you don't get an offline multiplayer account. It only shows your playercard from your online account. So the answer to your question is; you can't level up on your Black Ops splitscreen account because you don't get splitscreen accounts in Black Ops.
Boosting.
The only way you can get ascenison in black ops for free is by hacking it... and if you hack you will get band from playing black ops online or from Xbox live.
create one
no
it is free -_-
Games are not free if they are legal and not demos. I don't believe there is a Black Ops like game
yes
No
rezurrection map pack or hack it or put local as japan laguage as japan create new account email put something@jmail.co.jp go to black ops go to store and download rezurrection for FREE
it is a mod, you have to mod your account to activate it.
you have to get to lvl 50 on your multiplayer account