No, it is not required. There is an option to use it, along with the standard WiiMote and Nunchuck, Classic Controller and Classic Controller Pro.
No, you both need the game.
you need to buy it
You Will need to get a flashdrive and need mod menu.
no
call of duty black ops
no
You need to unlock the weapons.
you need to not die and you can beat it
no
you need to have wireless internet
yes
Yes you do.