Complete the game under the Easy or Medium difficulty setting to unlock the Hard difficulty.

Choose the sniper weapon set and set blue and red team with green weapon.Make sure which is leader in the room; he may wear a green or blue turban (randomized). Use the sniper to shoot the leader first. The remaining suspect will stick with hostage, but this isn't a problem. Ready your member to breach (boom) the door, and also ready your sniper. Kill the two remaining suspects when the hostages are startled by the entry (as they duck out of the way).

To bring up the cheat code entry screen, pause the game and hold L + R + TRIANGLE + LEFT. Activate the following cheats by pressing the corresponding sequences of buttons:

CHEAT FUNCTION - CHEAT CODE
Invincible officers - TRIANGLE, UP, RIGHT(3), LEFT(3).
Invincible player - SQUARE, UP, DOWN(2), X, LEFT, UP, DOWN.
Invincible civilians - UP(3), LEFT, DOWN, UP(2), RIGHT.
All weapons - X, SQUARE, TRIANGLE, X, SQUARE, TRIANGLE, LEFT, RIGHT.
Infinite ammunition - SQUARE(2), TRIANGLE(2), LEFT, RIGHT, X(2).
Player and officers fully promoted - SQUARE(2), TRIANGLE, UP(2), DOWN(2), SQUARE.
Player invisible to others - RIGHT, LEFT, RIGHT, LEFT, DOWN, UP, RIGHT, LEFT.
All characters visible - LEFT, SQUARE, UP, TRIANGLE, DOWN, X, RIGHT(2).
Stop active timer - SQUARE, TRIANGLE, LEFT, UP, DOWN, X(2), DOWN.
Sounds not heard - UP, DOWN(2), LEFT, UP, DOWN(3).
Remixed credits - UP, RIGHT, LEFT, RIGHT, X, RIGHT, X, RIGHT.