The few difficult parts are due to the sheer number of mobs, rather than difficult gameplay which would be preferable. Different enemies should require different tactics. Currently the enemies are all basically the same with the exception of one boss I've seen so far, the big dreadnought looking thing that has an AOE you have to dodge and the towers that give it a shield. Fights are too simple and are just about killing the other guys faster than they kill you. Progression is artificially restricted by fate. It's too hard to find inoculators with the right slots on them. The amount of damage the enemies do in some rooms makes inoculators that aren't focused on healing basically pointless.