Mouse has BM, so does Controller.
Mouse does not have AA, Controller does.
If you want to call AA a different thing, like "friction assist" then have at it.
AA happens before the shot is fired, BM happens after the shot is fired.
So yeah, Frost Walker is a pain for sure, killed him 4 times yesterday. Seems the best strategy is just assume everyone sucks and do the mechanic yourself. That and pray you get a Lepic on your team.
Well, that's a lie. I've combined over 30 orange mods and almost always got duplicates. I did get one or two non-dupes, including Demonic Modification for Gley.
Hangman is the first real "mechanic" boss. You blow him up and as you do he leaks fluid into the vials beneath him, you need to pick up the box and that makes him immune except for his face/tongue, get your team mates to kill it. Put the box back in once he's drained and resume killing him.
Maybe this is why I haven't seen your struggles as much. I've invested a reasonable amount into my Gley and her weapons to make bosses easier. With the Inf Ammo and a well rolled but zero investment Organ was doing 20-24mil damage on HM Pyro I'm at least pulling my weight and a little more...