He doesn't strictly need to attack anyone while raging. If he were a Frenzied Berserker, and had used Frenzy, then he'd had to attack someone. Anything he perceives as a possible enemy, which could include fellow students or even instructors.<br/><br/>But Barbarians don't have to attack when raging. They just can't do things that require concentration, like cast a spell, or pick a lock. At least, that's how I remember it. Last time I played a Barbarian, I was 13. It was my first character! Ahhh.... nostalgia...