I would get a chuckle if a grunt would be able to attempt an upper cut and yell SHROUKEN! (AKA the dragon punch). But to answer your question, I wouldn't mind a new challenge, given the pathetic nature of the grunts and the our new role playing as a 6ft something ODST. However, unless we have the ability to equip the Halo 1 pistol and go behind a Hunter and shoot their orange spot, they would be the last creature I would want to tackle with in Halo 3: ODST.