Ok, I know he's tough but here is what you gotta do, have naruto, choji, and sakura or ino, make sure they are on level 50. Whenever you can use rasengan, use it! Eventually you will beat him, and power up choji cuse he can do massive damage, good luck
if your talking about spirit beast gensho, he has 7800 HP and 9999 chakra.:[
crystal ravine. though you might want to level up you characters first
pain
Dark Samus is the final boss. And after you defeat her, you have to escape to your ship.
the boss battles is fighting sasuke pain and all the akatuski memebers
Assuming you have the 4th Borderlands DLC, the Interplanetary Ninja Claptrap is the final boss.
Fight the final boss
well, maybe 10,000.
When you defeat the final boss of the game Epic Mickey a cut scene showing the events followed the defeating of the boss show. In your terms, the cut scene that follows the final boss is the "final ending".
Complete the final day and defeat the final boss. There is additional content afterwards.
Kick his balls !!
you have to beat boss battle against Pain in "The Tale of Naruto Uzumaki" chapter then you have to collect all the cursed dolls (including the Naruto Sage Mode doll which is not on the wanted list) after that you are directed to a cutscene which will lead you to a versus battle between Taka Sasuke and Killer Bee