Purple Fier? Pink Place? Oh you're talking about the Stewart and the demon dungeon that closes off after you're done with the quest.
Given that you also got the Valkyrie wings for Leia, I'm guessing you need to do the following:
- Go north from the desert until you see a Snowy Island.
- Finish the quest within the city of steam. (Brasswell if I'm correct)
- Go to the Igloo back on the snowy island when you can leave the city.
That should allow you to finish off what is currently available in the game. Other than that, you just have "side quests" to deal with. Most of them are unmarked in the Quest Book, so keep an eye out for them and keep an eye on the dialogue.