Anything that has to do with those masks guys and the Mask of Infamy. Without any really good items those guys are a hellish battle to be fought. Even worse those few rooms were you get 4 masks and very small moving space, pretty much a guaranteed heart or more of damage. I am just glad it has been a long time since I have seen the Mask of Infamy.
Second up, for me at least, are Leapers. Those bloody torsos that jump into space only to try to land on you and send out a quad shot of blood. They are one of the most annoying enemies by far because every once in a while they will do nothing but jump, and jump, and jump, and give no room for you offensive for a decent span of time which you will spend running in circles to dodge them all.
Last but not least by far, Greed Heads. The hanging greeds are no problem, even with the fly they are too slow to be much of a bother. But Greed Heads are evil monsters spewed forth from the bottomless pit of hell itself. They bounce so fast and if one wants to start chasing after you, you better be packing enough power to end him quick. Let us not even talk about some of the rooms they spawn in with 1 block size lanes with pits on both sides.
With those 3 hate listed enemies named I must go and finish getting platinum, with only the Purist challenge being the last block in my way.
