FF III/VI LLC Boss: Ifrit and Shiva 

Pretty easy. Everyone have wall ring. Edgar hyperwirst, others earings.
Edgar Drill,
Celes hit blizzard (sword)
Gau use: Slamdancer (Rage) Ice 2
Locke: Just keep him throw tonic/potions, fenx downs etc... if you need. (don,t use cure spells) Common mistake i did when i am reflected. Just favor more tonic. Cheaper and boss physical attack are weak expect flames, its instant kill so not matter potion or tonic.
When Shiva appear boss is technically done.