Dandy
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Yeah, you're doing your best.
The battle with Rampart wasn't too difficult for me; I thought Inferno would be more challenging. On Rampart, a Earth magic user provides Mass Curse and Mass Air Shield until the elves fire – this reduces the damage they deal (in my playthrough) to 5k (with full stacks of elves) with a resurrection rate of 2.5 – you could even just tank it. There's also the possibility of getting stuck in a corner with a tent and those same elves or a hypnotized stack. It would be helpful to see what the actual conditions are when facing Rampart.
The battle with Rampart wasn't too difficult for me; I thought Inferno would be more challenging. On Rampart, a Earth magic user provides Mass Curse and Mass Air Shield until the elves fire – this reduces the damage they deal (in my playthrough) to 5k (with full stacks of elves) with a resurrection rate of 2.5 – you could even just tank it. There's also the possibility of getting stuck in a corner with a tent and those same elves or a hypnotized stack. It would be helpful to see what the actual conditions are when facing Rampart.