Everyone, meet your new boss and sensei: Kakashi. Legend has it that he has copied over 1000 jutsus in his lifetime, and if you’re not careful, he will copy yours too! 
Kakashi manages to copy every minion you play using the power of his Sharingan. That’s right! In this game, you are your own worst enemy! Here’s the catch, though: his copies only have one health, making them easier to kill.
…or so you might think!
He’s not the 6th Hokage for nothing! Kakashi knew that his clones wouldn’t be much of a challenge with only 1 health, and so he has performed his newly-perfected Duelyst Structure Jutsu, which summons a Bastion to his aid at the start of the game.
If you wait too long, his swarm will overwhelm you, so you have to think fast like a true ninja if you want to defeat him! or distract him with a copy of Make-Out Tactics
If you defeat Kakashi, you will become the next Hokage and he will teach you the Boss Crate Jutsu! It uses up so much chakra that you’ll have to wait until the next Boss Battle to do it again.