Barbarian Bloodlust will activate after killing one, not two, enemies. This is in 3.03, but as I haven't seen it mentioned I presume it applies to the beta also.

Interesting. I did not experience this with 3.03. I didn't monitor every kill of course, but I guess I would have noticed this during my barb solo run.

It's usually after two, but sometimes won't activate until three are killed, and will sometimes activate after just one. Could be how the game defines a group of enemies for the purposes of combat.

Ah, OK.