Tenchu: Wrath of Heaven

Go to the main title screen and press L1, Up, R1, Down, L2, Right, R2, Left.

Cats are invincible. You cannot even stealth kill them. Their only purpose is alerting every guard in the area. Stay away from them if you can.

Press R1 + R2 + L1 + L2 + Start + Select during game play.

Enable the "Unlock all items" and the "Unlimited item capacity" code. Get between 50 to 100 Chameleon Cloaks and/or 50 to 100 Invisibility Cloaks. Note: The Invisibility Cloaks will not let you use any item except for the same item; the Chameleon Cloaks will.

Play a stage with a beehive. Note: The first stage has two of them. Lure enemies and innocents near a beehive with either a poison rice or a magazine (Tesshu). Then, hit the beehive with either a shuriken or a throwing needle and watch the bees take care of them. You will not lose any Kanji when the bee's kill an innocent, nor will you gain any as a stealth kill. This helps take care of groups of enemies, as the bees attack multiple targets at once. You can re-hit the hive to have them finish the job. Note: If you are too close to the hive or are the only one in the vicinity, the bees will attack you.

Take a few low-damage range weapon with you, such as throwing stars, or pick up bows and arrows from the guards, and bring along some poison rice. Generally two arrows or stars will be just enough to bring an innocent person's health down to the point where the rice can finish the job. However, sometimes these two stars or arrows will just be enough to kill them; you will have to experiment with the damage they do at different ranges. However, you have to throw the rice last, as they only eat a poison rice ball once.

Get a rank of Grand Master on a level to unlock new items. The item is different for every level.

Successfully complete level 6 as Rikimaru or Ayame.

Get a "Grandmaster" rank in all of Ayame's levels.

While playing as Ayame, perform a stealth kill on an enemy while he or she is on a slope. After she kills them, they will seem to be "bowing" down to you.

When playing as Tessu, you can actually repel enemies that are chasing you. If an enemy is chasing you, simply move out of sight and get into stealth mode up against the wall. Use your barnyard animal call and the enemy will think that you were just an animal and simply walk away and return to green mode.