I'd stopped my BLU at level 64, not 70 (forgot earlier). I only did up to stage 25 of the Carnivale, so I never tried the infamous stage 29.. That said, I do think I'm reasonably decent when it comes to Boss mechs so I gave it a try. Note that my BLUE is sitting in lv60 Shire gear.
- I watched a youtube vid to see what I was getting myself in to. Lots of mechs but nothing struck me as infeasable at first glance...
- I gave it a go with a main loadout of Sonic Boom & Electrogenesis (for primary dps on each), Flying Sardine, Diamondback, and Exuviation to handle certain mechs, Bristle for burst dmg when avaialble, and White Wind for heals. That's IT, nothing else (not even Mimicry, hadn't gotten it yet).
- I beat the first boss on attempt #2. He's easy, I can fight him in my sleep honestly, all his mechs are simple once you know what they are and his pattern is 100% static (as in it's not random at all. He will ALWAYS do the same attacks in the same order)
- The second boss was the same at first until the hands spawned. They wiped the floor with me. This repeated in a few more tries as I tried to burst them down but just simply could not.
I decided to do some much needed preparations to give me an edge:
- I got Aetheric Mimicry in order to mimic DPS to burst down the hands more easily
- I went and got Shock Strike to even further add to my burst DPS capabilities on the hands
I went back in to give it another go....
On my 3rd time against the hands, I finally found the way to do it:
- Make sure to be facing north (check via minimap) when he starts casting to spawn in the hands
- Position on the right-hand side since that's where "Left Hand" will spawn .. this one needs to die first since otherwise it'll drain all MP and you die
- Cast Brittle while he's spawning them and the literal second the hand appears target it and Shock Strike followed by 2x Electrogenesis >>> the Left Hand will die
- Immediately White Wind since your HP will be around half, then swap to Right Hand and hit him with 2 Electrogenesis
- Swap to the Boss and interrupt his swing else it'll knock you into the outer electric ring and you die
- Immediately swap back to Right Hand and cast until it's dead, at which time you should have enough time to do another round of White Wind to heal back to full and Diamondback since the main Boss will now use his smasher which kills you if you're not protected
After that it's a matter of dodging well, interrupting when necessary, healing and managing MP. the hands were the only truly difficult mech in the whole fight