If it's cool to add stuff to the above, this probably goes for all builds, but the biggest advantage you can get in the game is understanding how the enemies move and interact with you and the world around them. Even at current the enemies feel more like residents of The Drop where as you're just a visitor. Learning from them is going to get you to where you want to be easier than ignoring their tells.
Bats will try to circle around you and they can see you before you see them. They're going to gun for you and the more there are the harder they are to manage. Don't let them sneak up on you but be aware that to much focus on the little monsters will distract you from bigger enemies
Gobelings have a shorter visual range but they'll rush you even if other enemies are in the way. This causes two threats to occur at once. The first is attacking you outright, they do good damage and they're fast so if you're playing a class like the Gladiator keep in mind they're going to be one of the biggest threats in the room. The second threat is terrain manipulation, meaning pushing you into bottomless pits or pushing other enemies like Spiders or exploding plague rats at you which make them a much more nasty threat in these situations.
Ghosts are perhaps the easiest of the mobs to deal with. They won't attack unless your in range. Their shots are slow so easy to dodge or deflect and they don't start out as hostile so dispatching them before they dispatch you is fairly routine. They become more of a threat paired with other enemies or larger rooms where their attack range can be just out of sight. Their shots also deal damage to enemies, keep that in mind.
Spiders are perhaps the most dangerous AI at current. They'll scuttle around until they find you, get in range and then pounce you. Gobelings can push them into range as well and they can pounce over your defenses. Engage at range at all costs.
Rats are your common "come right at you" enemies. They're low health and thus low priority. Plague Rats are even easier, scuttling away from you until they take damage (from any source so keep in mind that if there are traps you may have plague rats on your case). They take time to explode so try to engage them in areas that are wide open enough to let you get away.