7, fecking stuck on Battletron... he's impossible to do as a caster, against 9.8mhp within 2 minutes considering we need to constantly move!!
Yeah I could've easily killed battletron before they nearly doubled his health pool. I just get stuck on it because there is no way I can outheal the damage it puts on me. The 40k laser every few seconds or so just ends up killing me.
You don't get credit for rank 8 elites if you kill a different boss. The achievement requires you to quite literally kill the required bosses. I "won" disruptron and I think millhouse a couple times this way but never got credit and kept getting them again.
Btw finished rank 8 yesterday, all that happened was the achievement, a server wide announce with empty achievement name (because FoS was removed), and now I get a random boss of any rank when I queue up.
I was stuck on battletron for days, I surpassed him by killing someones lower rank boss, I also couldnt kill rank 8 rares, I got the brawler title because again I killed someone elses low rank boss