Yeah, what gave it away? No point in hiding it. He's not one for giving much away about himself, but in this case, it's pretty damned obvious, he'd think. A shrug.

"Yeah." The angle of his head might imply something to the effect of well, what can you do? He's stuck here now. He isn't dead, though. Suppose that's something. Be easier if he was.

Had to watch everyone else die first, so maybe he's adjusting to having to be alone, a little bit. Not a great feeling.

"That obvious?" That's a bit more of a joke, almost, but the way he says it - deadpan and with no deviation in his expression whatsoever, might make it hard to gauge it as such.