If you preordered Halo 4 and have the assassin emblem code, you can use it by going to your spartan's emblem and looking for it in the foreground option.
No.
The assassin tracked his target.
The Olympic emblem can only be used to represent the Olympics
I don't know how to separate A halo-halo. (whatever that is)
Swastika
No
EXAMPLE: My family and I stayed at an inn for vacation.
Ashoka stambha is a national emblem therefore not meant for public use. Only Government institutions of States and Central government can use those national emblem and symbols.Any private use of those national symbols are punishable offence.
The assassin assassinated the other assassin.
You can't get Halo on PC
You can in HALO 1 if you use mods, but it has to be on the computer.
you use the CD key of your ordinary halo game