At the moment the ninja can't (or simply doesn't) duck, creating a zone where you will always be hit as your jumps never clear the height of your head, making its projectiles undodgeable.

Thanks for your response! Even when the game is publicly available, so anyone can try it and send some feedback, its curently under testing. 

This specific problem with ducking is caused by the port to mobile platforms. Its already been fixed, but hasnt been uploaded yet because it broke the animations. When its completly working i’ll update tha latest version which also has some tweaks for the mobile platforms.

Once again, thanks for your comment!