As a low level player - mimic, fast and has so much flee
As a player who mobs monsters - hodremlin, fcking sees in cloak == and aggressive too
When killing MVPs, Entweihen Crothen - it has a bunch of thorny skeletons, thorn of purification, magic thorn. Tons of them .__.
Any monster that uses JT, Storm Gust, freezes you, you have to use something besides neutral to hit it, or you have to only use neutral to hit it, like angeling or like ghost element.
That's my list =)