Step 1: Go to the Dojo, and talk to the Sensei.
Step 2: Collect your cards, and choose “Earn my belts”.
To win a game, you need to get all three symbols, Snow, Fire, Water in different colors or get the same symbol. Like snow, snow, and snow.
Here are the list of belts that you can earn from playing Card Jitsu matches:
Once you get your Black belt, you will need to get one more item to become a ninja. It is the ninja mask. To get the ninja mask you will need to beat the Sensei in Sensei Mode. Click “Challenge Sensei” to start your match with him, it may take a couple tries!
You can view your progress by clicking on the three cards in the bottom right-hand corner of the screen.
You can also check your cards here:
Once you have achieved the Ninja mask, you can enter the secret Ninja Hideout. From here, you can access the Martial Arts catalog: