I like the game but I don't have much to say about getting the platinum trophy for this one. If you don't have friends or find other players to help you than this one practically impossible to get. In all honesty I made good use of an exploit that helped me get the platinum since I had legitimately gotten it before. I guess the hardest ones to get are the ones that require 4 players and getting 50 different players to play on your custom stage from start to finish.

Trophy Difficulty depends on your situation. If you have friends it can be pretty quick other than the 50 unique players trophy. I would rate it a 6 out of 10.