Man of Honour
Finally got the last achievement: Reach for the Stars. It's a slog, but the last few levels were helped by finding a great XP farming technique on (IIRC) Reddit. Go to the Serpentis system, and any planet. Count to ten and you will get bounced by one to four Va'ruun ships, up to about level 64. Destroy them, then travel to the next moon/planet and repeat. Pretty much the only time you don't get bounced is if the game puts a different random encounter in for that planet. Once you've mined every orbiting body, jump out to another system, then jump back in and repeat. There doesn't seem to be any time waiting required. Obviously you need a solid Class C ship and some useful ship perks, but otherwise it's just fast travel, XP, fast travel XP etc. Fast travel is your friend here, not your enemy.