Use wasd or arrows or the touch controller to move and jump.
Use the e key to pick things up and the q key to throw things.
To enter doors and talk to towns people use the e key.
To use your usb connected gamepad, first pause the game, make sure your gamepad is connected,
then press one of its directional buttons,
then on screen it will ask you to assign each main button, then unpause the game,
then you will be playing the game with your gamepad.
There are 55 monsters to beat, not including the monsters on levels 1 and 2. And there is one boss at the end.
To become a ninja you have to defeat the red fire enemy. As a ninja you can double jump, wall slide and wall jump.
It takes about 10-15 minutes to beat all the monsters, but at first you'll want to explore and talk to the townspeople to get all the clues, and be sure to pick up all the health on the very first level, and the health that is on the bottom in the silver building.