Yes
yes i need them which games have them
Halo 3 itself does not contain Avatar Awards, but you can download the free "game" Halo Waypoint off of the Xbox LIVE Marketplace. This "game" will count up your achievements and depending on which ones you've unlocked, it will give you Halo themed Avatar Awards.
No.
No. yes
you can create an avatar then change it but no you can not crete two accounts with the same email if it will be on xbox live
it is not possible to live without laws and rules
No, your avatar can wear whatever you won within any game.
No.
no
no
actually, it's possible to live without a heart, but you must have it replaced by another thing that circulates your blood.
Yes, it is possible for you to allow someone to live in your house without charging them rent.