Since I didn't say it the first time, this mod is awesome! I love the charm of the player's prefixes lining up with the enemy prefixes. With that said, I've found three more problems that should be fixed:
Enemies with speed increases have a really bad habit of flying through blocks. Slimes, bats, jellyfish, goblins, if it has speed, it's in the wall.
For some reason, all slimes are the same size. This is most noticable with Purple Slimes and Pinky, but does apply to all of them.
The Mysterious Portals of Etheria can have modifiers. That doesn't seem right.