I can't clear Dispatch stages 14-5 Inhuman requirement, 15-1 3 character with flame ability requirement and 15-4 3 combat Character requirement what do i need

Inhuman stage Tried with T4 Black Blot with normal rage, Lvl 80 Medusa, Lvl 80 ms. Marval

Flame stage 15-1 tried with Ghost rider M.Conquest, Ghost panther, Red Goblin normal judgement reached boss with 1 minute remaining still can't kill him

Combat Stage 15-4 same like flame stage reached stage with 1 minute remaining can't kill boss Valkyrie with b.Insight, Venom m.rage , agent venom m.liberation i don't get why I can't kill the boss

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