Here is the link to a very useful strategy guide for Cellblock. To get the gold trophy you have to complete 11 tournaments. Since you can earn about 5k a day...that means it would roughly take you about 5-6 days to get a gold trophy. I strongly recommend this game as not only it is a easy way to earn nps, but you can get a trophy within a week too. P/s: If you need any help, ask myyyyyy- he is our resident Cellblock nut head.