Board Thread:Dark Souls II/@comment-67.212.188.13-20140314173221/@comment-24679176-20140314214816

I think its purpose its to prevent players from farming certain types of enemies like in Darkroot Garden where you farmed the enemies of the Forest hunter Covenant.

In the Cardinal Tower there is this Hollow Soldier that is sitting in a small corridor on one side of the gate, I always killed him when I teleported to the bonfire and suddenly he wasn't no more. Also there are certain types of enemis that won't respawn once they are killed.