I don't do many interesting things. Mostly I just go on homicidal rampages.
In G2, I kind of destroyed the entirety of the Rising. That was fun, some of those creatures were heavy on the Xp side.
In G3 I wanted to go Rebel. So I just started destroying everything as I went along. I tried going back to the School, and I was immediately attacked and killed. After a few levels and positioning my creatures ahead of me, I finally got through the entrance. I continued on, maiming and destroying as I liked, until I got to the Servant Mind. I did take the creature out, but as it died, it started bringing up messages about a data error or something. I accidently deleted the file the next day.