Tenchu 2

Health Restore:

While playing a normal level, pause the game then hold circle and press left, right, up, down then release circle and you will have full health but for every time you use this cheat it increases the number of times you've been spotted by 1.

Office tileset:
At the mission editor and select "Edit Mission." When you highlight the "New Mission," hold L2 and press Circle, Square, Left, Right, Circle, Square.

Copy Missions from Cd in Mission Editor

From the mission settings menu: Hold CIRCLE and press UP, UP, DOWN, DOWN, LEFT, RIGHT.

Unlock All missions in Mission Editor From the Custom Mission screen:
Hold R2 and CIRCLE and press UP, DOWN, DOWN, RIGHT, LEFT, LEFT.

Show Entire Map

While in the game: Hold select to view the map and press CIRCLE five
times.

Increase Item Inventory by 1

From the Item Selection screen: Hold R1 and SQUARE and press RIGHT, DOWN, LEFT, UP.

Unlock All Ninja Items

From the Item selection screen: Press SQUARE, SQUARE, SQUARE, CIRCLE, SQUARE, CIRCLE, CIRCLE, LEFT, UP, DOWN, RIGHT, R2, R2.