Board Thread:Questions and Answers/@comment-99.251.21.142-20150817031406/@comment-26913843-20150826170902

I did it at lvl 75 or so with:

Ivris 6* - lead (LS recovers hp and bb after each turn)

Balgran 6* (to inflict poison to the slime)

Quaid 5*

Aaron 5* (for mitigation)

Bestie 5* (to fill bb faster)

Deimos 7* friend for more hp and def

All of them have either sacred jewel, medulla gem and only dual sphered i had was bestie with omni gizmo to boost bc and hc

It is indeed hard, but i think with similar units it can be done, i would recommend having an ailment dealer unit, otherwise slime is really hard, i will leave a post where people listed all of these units

http://bravefrontierglobal.wikia.com/wiki/Thread:172505

Hope it helps and good luck