Let me break this down for you since these endgame fights can be pretty intense. For renoir's last battle, watch carefully for the black hole telegraph - there's a brief dark pulse before it forms, giving you just enough time to sprint to the outer edge. When he starts the void cross pattern, you'll want to position yourself diagonally since the safe zones appear in an x pattern. The real trick comes when he summons help - sirene shows up on the left platform while visages takes the right, and you'll need to focus sirene first since her healing can drag out the fight.

Speaking of visages, timing is absolutely crucial here. You'll see a quick gleam before each swipe and the pattern always goes right-left-right-left before the overhead smash, so get ready to parry or dodge through them. For sprong, keeping track of your ap is vital since that exhaust effect can really mess up your rotation. The laser telegraph has this distinct red glow that gives you about 1.5 seconds to react, and the best spot is usually about mid-range to bait out the smash attacks.

Sirene's probably the trickiest of the bunch, especially when she chains those rapid strikes. There's this sweet spot right at her left side where most attacks will miss if you time your dodges right, and you can usually get in two or three hits during her recovery animations. For grosse tête, honestly, the safest approach is staying at max range and watching for the tell-tale shoulder twitch that signals their rush attack.

Good to know that if you're pushing into ng+, those level 33 weapons make a huge difference in damage output, but remember you'll lose access to those helpful side quest buffs so make sure you're comfortable with the base mechanics first.