It's actually pretty straightforward once you know the steps to tackle this one. Start by making your way down into the structure and you'll run into some tougher versions of portier and nevrons, watch for gaps in portier's shield timing and keep moving to avoid those nevron shots. The paint cage setup needs three locks dealt with, first one's up on this bronze structure by the north rope path, second lock is sitting on the west wall at the dead end up north, and the third you'll spot on top of a boulder when you look back from the southern rope line. Getting close to enemies works better than you might think, especially if you time your attacks right after their moves finish.

Once you've handled all the locks, you'll snag yourself a revive tint shard which is definitely worth the trouble. The core itself gets interesting, and you'll want to use the environment against it whenever it moves around. Save your energy for when it's vulnerable, and keep an eye out for those area attacks that can catch you off guard. Whenever you see it start to teleport, that's usually your cue to reposition. Those lanceram upgrades from the waterfall area really come in handy here, makes dealing with all the movement much easier.