This is an exceedingly remedial question, and for that I apologize, but I can't seem to find the answer on the forums here.

I know you can win by conquest (kill 'em all!) but what other paths are there to victory and how exactly can you reach them?

I seem to remember mentions of diplomacy and a Master Quest and other things from old interviews, but do they work?  Is it feasible -- as a challenge to myself -- to attempt victory in some other ways than building a vast empire, training a massive army, and conquering all?

Thanks!