Team: Jiu (R10 / P0), Six (R10 / P0), Balloon Party (R10 / P0), Voyager (R10 / P0)
This one required a few tries. I had to go back and fetch Jiu for this (who I originally used for 6-1 with Thirty Seven) since I didn't have any other, real Mineral DPS characters to rely on. I feel like this fight wouldn't be half as bad with a full party. It's a lot tougher with only 3 Characters / 3 Actions per turn.
I didn't really read the stage mechanics and kinda just brute forced this with Jiu. I do know that you want to take out the enemy Doors, since their Ultimates will allow boss Lilya (who normally doesn't gain Moxie) to use her Ultimate.
Don't be too bothered if you can't clear this Limbo stage right now. Like I mentioned in the 5-2 video, some of the upcoming 1.9 characters will probably make this easier (Lucy is obvious, but every account is also getting a free 6-Star Mineral character called Semmelweis).
6