After Act3

So… what are you supposed to do after Act3?

Like I beat Renoir and all that and I was under the impression you could now explore everything with Esquie’s flying but literally everything is now like level 1million. It went from fun and playable to everyone kicks my behind in 2-3 hits and whilst I like a challenge it’s just tedious getting straight up killed and not having a chance. Either that or repeating 30 minute battles over and over which, I don’t know about you guys, but I don’t have the will power for.

Am I missing something here or is the game just done at this point?