Scott Pilgrim vs. The World: The Game is surprisingly hard for either Xbox 360 or Playstation 3. If you have the PS3 version, this video will show you a great trick for leveling up and getting nearly infinite money quickly.
From the Creator:
**** Xbox 360 users ****
You cannot do the infinite easy money trick because it won't let you sign on with a guest profile... however, there is a way to get a lot of coins fairly easily. If you've made it through the first 4 levels, you can start level 5, go into the purple star door just to the left, gather a bunch of coins, exit to map, repeat... you don't have to fight anyone and it's a decent way of gaining coins fast on the 360 since the hack in my video doesn't work for the 360...