The year was: 2005
2005
2005
2005
no
no you don't you can get the achievement on campaign
Only Reset to 0G
You have to get the spartan graduate achievement by playing on Xbox Live
I don't think you'd need it.
They are from the pc, online xbox live account. What ever achievements you earn from that game goes to your xbox live account's gamerscore and be classified as "Halo 2: PC".
Yes it does work as normal but you can't get achievement so if you want to have a blast go ahead and modify it.
no
It is still Xbox Live.