Unlimited Ammo
Pause the game and press L1, R1, SQUARE, SQUARE or L1, R1, Triangle, Square,
Square
Level select
Beat the game under the normal or hard difficulty setting to unlock an
option that will allow you to pick any level in the game.
Grenades
When on any level and there are two enemies talking to each other, throw a
grenade (for example at the beginning of the Think Like A Gun level). They will
not even look to see what it was because they will be distracted.
Shooting enemies
The best way to kill someone is to pull the trigger when your crosshairs are
red.
Shooting hidden enemies
Some enemies hide in areas where you cannot shoot them. Throw a grenade at
them and they will jump out of hiding. When they jump out, they will land on the
ground on their stomachs. They will require a few seconds to get back up. Before
they do, aim and shoot them or they will go back and hide again.
