At the conclusion of each mission your assassin techniques are reviewed. Your score and rank will depend on how many enemies you killed and under what circumstances. If you score a high rank your tools will be increased. Score the highest rank, Master of Assassins, and you will be rewarded with a special Master of Assassins tool per mission.
Unlike Rikimaru & Ayame who choose their items from what Gohda offers them, Tesshu must buy his available items using what money he has accumulated.
A break down of the scoring system, ranking and payment for Tesshu in Tenchu: Wrath of Heaven is given below. Ayame’s & Rikimaru’s Ranking system can be found here.
|Undetected Kills||Undetected kills||+20||(for each)|
|Detected kills||Detected kills||+5||(for each)|
|Not spotted bonus||+150|
|Innocents||Innocent kills||-50||(for each)|
|x < 100||Novice||3 random tools increased|
|100 <||x < 250||Thug||5 random tools increased|
|250 <||x < 350||Rookie||10 random tools increased|
|350 <||x < 450||Professional||all tools and special tools increased|
|x > 450||Master of Assassins||all tools and special tools increased|
|t < 21 min||220|
|21 <||t < 23 min||160|
|23 <||t < 26 min||120|
|26 <||t < 29 min||80|
|29 <||t < 30 min||30|
|t > 30 min||0|
For each mission you complete you receive money. The main bulk of your payment is equal to twice your score with additional funds given for the resale of unused/collected items, collected money during the level and a time bonus based on your speed (see times above).
The fact that you only need 450pts to gain a Grand Master ranking allows you to deduce two formulae regarding how many times you can be spotted and still gain the highest rank. Suppose a mission has x enemies. Then use these formulae to check how many times you can be spotted, s :
|Formula 1||s <||20x – 150|
|Formula 2||s <||20x – 150|
where Formula 1 calculates s assuming you normally kill any enemy who sees you, and Formula 2 assuming you stealth kill any enemy who spots you. Note these formulae assume you kill every enemy on the level.