Cooper noticed blood on his territory (aka the survivors’ safe place/shelter), he goes inside and saw multiple bodies, everywhere. He goes upstairs to see his party and sees Lectro and Spacey’s bodies, hanging. He then saw Natsuki, who looks pretty much “okay.” And then her eyes were gauged out of her eye sockets, Cooper was traumatized and was in pure misery in the end, he puts a blindfold on Natsuki’s eyes and leans on a wall, mourning on everyone.