"St-Still... I did it... it's my fault I collected those souls and blew up the island and--!" And in the end, it wouldn't have mattered if he defeated Frisk. The island never would've allowed him to usurp control. He'd done all these stupid selfish things for nothing. "Y-You saved me again--saved all of us--I know you're tired and hurt and exhausted--it's a lot of work and I'm not making it better..."