So, on my current playthrough, Im going for one of the only main game achievements I don't have yet, which is Ghost. I think I understand whats required, but I just want to clear things up so I don't do the whole thing only to find out I'm doing it wrong.

I can still get the achievement if I kill the following people...

Overseer Campbell, the Pendletons, Lady Boyle, the Lord Regent, and Havelock

...right?