Instakill

Poisoned projectiles have a 10% chance of an instakill vs non-poison-resistant monsters. (Note that the Tsurugi of Murumasa and Vorpal Blade only have a 5% chance of an instakill.)

Quite true re 3 hit DP instakill combo.

The level of frustration is subjective. As long as everyone has the same instakill mobs there is a level playing field ergo I live with it. The instakill mobs do decrease the amount of adventuring you can do w/o being high level, so that is a personal pain in the butt for me.