User blog comment:PlaguedWings/Dark Souls 2 differences, I guess./@comment-1855630-20140312202841

The most interesting mechanic change I've heard of is that common enemies have limited number of respawns now - ENB said 15. In other words, if you kill a particular enemy 15 times, he won't respawn again in this playthrough, unless you use the Bonfire Ascetic, which resets the counter.

I like the idea - it's a very soft version of a dynamic difficulty and an effective anti-grind mechanism rolled into one, but I think 15 might be too high of a number. Most people probably won't ever notice it exists.