Keep in mind that if you want him to die in battle, he seems to charge past you a lot. That means a tasty AoO for you, and a possibility of him going into a fight wounded.

Also, see if you can't get into a town while the rogue is doing stupid things, I doubt that the villagers, much less the guards, will be too thrilled with his antics. That is, unless your DM likes it when the rogue is being a jerk.