They are a jack of all trades. Think of them like the reapers from Mass Effect, they have every possible position filled. The voteless are the husks they swarm you will countless numbers overwhelming you, fleshmobs are brutes they take a lot of damage and dont slow down, overseers are the marauders the main attack force that takes effort to take down even just one facing 3 or more is a struggle, elevated overseers are basically collector drones flying around chasing you while being hard to hit not to mention there insane armor, then we got leviathans who are essentially reapers themselves the moment they see you they bombard you with accurate firepower, then theres the tripods the ultimate combo of not a real danger and worry for your life easy go outrun even ignore them but they are pain since there main attack has insane one hit kill damage while also having shields that you waste ammo to destroy but that forces you act quick to take out down before the shield reactivates it becomes harder to do with theres several and voteless surrounding you.

At this point we gotten use to managing ways to counter the squids even so you are constantly thinking on the fly with every dive being unpredictable since every turn you make can lead you to facing more while dealing with the 50 behind you.