I’ll just put down some notes matching your effort level ;) “Perforator” sounds like many small projectiles that scatter in all directions, like needles. Long buildup to give players chance to flee the room. “Revenant” obviously has two lives. “Maelstrom” similar to your ink zombie but deforming their perimeter. Think vortex around them. “Vindicator” does more damage the more you damage them. “Sentinel” will have massive damage reduction when standing still. Has to be damaged while moving. “Hatchet” Throws limbs at you with high damage but limited to limbs. “Carnage” moves in rapid but straight motions, shredding everything in its path. Think of sticking to walls, jumping from one wall to another. “Fissure” slams ground and casts a barrier\damage path while standing still. Great for making player movement difficult, not got in self-defense.