sans the final boss batttle obby

sans is back and is angeryer than you have ever seen and hes is not giveing up without a final fight ones and for all!!!! 1ph no other buttons but fight or is there a new button more power full than enything? story line as you reset to make every one suffer agien and agien sans is dun and is throwing every thing hes got at you hes destroid every button but the fight button but he forgot about the one true most power full button!!!!!! hint this butten is made by a hacker and is rarer than eny thing ever