Unlimited ammunition: Hold L2 + R2 and press Circle,
Square, X, Square, Triangle(2).
Unlimited respect: Hold L2 + R2 and press X, Square,
X, Square, Triangle(2).
Invincibility: Hold L2 + R2 and press Up, Square,
Up, Square, Triangle(2).
Hint: Unlimited money: After the mission where you must dump Mario's body,
you will find yourself at a casino. There are two pieces of loot
you can collect: a cell phone near the slot machines, and more
importantly some credit cards over at the bar. The cell phone
is only worth a few hundred dollars, but the credit cards are
worth almost $1,000. After collecting these items, use a slot
machine. Exit out of it as soon as the slots pop up. You will
find yourself back in the casino, and the cell phone and credit
cards will be back in their original locations. Keep collecting
them repeatedly to get as much money as desired. D-Star