1. Why not? IF I keep my mind, and my loyalties, why wouldn't I just start killing other Necrons as much as I could.
2. I'd serve Chaos. No reason other than for the wild abandon and freedom.
3. I'd let them take me, just to see how long I'd last before I broke. Of course, I'd be broken and unable to appreciate my strength of will or lack of it, but oh well.
4. Kill 'em all 'til I die.
"Wulfe gestured around at the strange metal buildings. He didn't like the angles, the proportions, the lines. They didn't look like any Imperial buildings he had ever seen, and that made them wrong."