*Syphon filter 3

*Hard mode

Highlight the "New Game" option at the main menu. Then, hold Square + Circle + L1 + R2 + Select + Up + X.

*Level select

Successfully complete the game under the hard difficulty setting to unlock the "Level Select" option.

*Super Agent mode

Successfully complete the game to unlock Super Agent mode. Start a new game. Pause game play and enter the options screen. Enable the "Super Agent" option to make all shots one-hit kills.

*End level

Successfully complete the game to unlock the End Level cheat. This allows you to end the level in missions and in mini-games.

*Biathlon mini-game

Use the Air Taser to snipe all the enemies in Room 413 during the first mission.

*Jungle level (Multiplayer)

Rescue the two women in the Jungle level to unlock it for multi-player mode.

*Pharcom Warehouses (Multiplayer)

Successfully complete the Waterfront level with a time under 2 minutes.

*Rhoemer's Computer Center (Multiplayer)

Complete the C-5 Galaxy Transport level without killing the co-pilot.

*Rhoemer's Fortress (Multiplayer)

Complete the St. George Australia level without being detected before saving all the aborigines.

*S.S..Lorelei (Multiplayer)

Complete the S.S. Lorelei level without killing the engineer.