AsukaYen screenshots and copy paste gear progression? Cmon dude
Armour recommendation is missing gear switches.
Step 1 is a bit misleading and uninformative. You typically have enough time to kill 2 respiratory systems until you need to stun him a 2nd time. You'll know that you need to stun him again because the tentacles will be active.
Stage 3 "just run away from the boss", you only need to run 2 tiles away.
