Well, that's sure as hell more than he's done in his life. Fighting other mutants and trying to destroy humanity seems bad, but-- "You know them," he states in an as-a-matter-of-fact manner, taking a final pull from the flask, then moving to tuck it into his coat pocket.

"I know. I've seen it."

He stumbles forward a few paces, brushing past Erik to stand at the edge of the roof. "Let's go, then."