Havok didn't actually leave right away, he just backed up enough, so that he was no longer visible and then stood still, watching them. 'Hidden Presence' perfectly masked him if he was standing still, unless Doe was a rank above him then there was a very, very slim chance that they could sense Havok standing there.
He was hoping to hear something interesting, but they just reacted to what he said then left. For a few seconds he was tempted to follow them but decided against it. He would rather go home and sleep. Despite not killing all three of his targets, he did get one of them, millions in gold, dozens of blue ranked cores, several hundred mana stones and a 'Core Contract' that forced Adam and the Nationalist to leave them alone.
So, all in all, it turned out to be a great birthday. He had sex, made money and did some killing. That was pretty much the best case for a day for him right now. He returned to the northern region and arrived home.
