there is a silver and a gold, so ,twice.
you only can upgrade any weapon once
3
3
Try using google....there are many easy fixes....jeez
Sometimes 10 or 40
4
there are many glitches on highrise. if you have xbox live on the xbox360 add me and ill teach you some i know gamertag twins fan
Yes you can. But I am not sure how many times each upgrades
There is no limit.
Xbox sucks
lots and lots
Millions!