Use a second controller for 2 players
Get to the shopping district on Stage 1, clear the enemies here so you can be in peace by the rental video store
On controller 2 Hold L2 and R2. While holding hit up up down down left right left right X circle.
This will cause the character to die but drop $50.00 in canadian moola.
Revive the second player with controller one, and pickup the coins. Repeat ti trophy and enjoy your riches