I’ve fought the tank/spider a few times now and every time it’s been a slog. It has some of the more annoying abilities grabbed from other bosses, ex the Eidolon’s stomp, and seems to have the most staggering attacks out of all bosses, or at least uses them very frequently.
With most other bosses, even the more annoying ones like Kela or Profit Taker, I’m mostly thinking about how to play better using normal means to beat the boss… with H-09 I am just thinking to myself: ‘OK, how do I cheese this?’ for most of the second phase.
I dunno, I did the first fight with felarx and it took a while, the incarnon mode fire wasn’t doing that well with the weak points either. On later attempts I tried my one true love Lex Prime Incarnon and it was melting the boss weakpoints, just sweeping through the tank and destroying all weakpoints in one charge. Even the regular fire oneshots the weakpoints in the first above-ground phase which makes it so satisfying to pop them all in one aimglide.
I’ve heard about the heavy slam build strategy and haven’t tried it but allegedly it’s a good one too.
Also keep in mind that you get the benefits from the calendar Hex overrides - the longer you wait the easier it’s gonna be as you continue stacking upgrades (just remember to do it before the calendar year resets).