1) Individual: I am very introverted, I need tons of time alone to recharge, and I have an intense dislike for large crowds. There are few situations where I'd pick being with people over solitude for longer than a few hours at most.
Realism: I don't see the point in hoping for more than is realistic. All it does is set you up for disappointment. To me, realistic doesn't mean settling for less, it means not wasting your resources on things that will never happen.
Knowledge: I'm not the most creative person, but I can remember more or less random knowledge just fine. They are both fun, but knowledge can be a bit more practical, I think.
Reason: Logic and reason are easy, emotions are complicated. Give me easy to understand and to control over puzzling feelings and passions that make vulnerable and lead to questionable decisions.

2) As cliché as it sounds, the one thing I want to achieve in life is happiness. If I can wake up in the mornings and be happy with who I am and how my life is going, that's the only goal I need. I wouldn't be willing to do anything, no. If you told me I could buy this sort of being content by killing someone, I'd walk away.