Easy items money:
To easily get scrolls, fill your inventory with bamboo traps. Then, line them up one after another in the path of an enemy so that he will hit the first one and bounce to the next one until he has hit all eight traps. If done correctly, each time the enemy bounces off a trap he will drop one of the following: money, ninja gear ingredients, or sometimes a scroll. Also, you can sell the eight trap kills you just got at the shop for money.

Kill types:
The following are the ten types of kills you can get:

Sword Kill
Trap Kill
Poison Kill
Water Kill
Explosive Kill
Spike Kill
Tiger-Trap Kill
Fall Kill
Surprise Kill
Joke Kill.

In order to get Surprise Kills and Joke Kills, you need to unlock the scrolls that allow you to make Joke Books and Surprise Boxes. Once you get kills with all the different types, the background of that enemy’s kill gallery will turn gold.