How the actual fuck is it possible to complete the "A perfect martyr" mission on hard in the Joan of Arc campaign?

I just can't fucking do this mission for the life of me on hard. The issue is burgundy with it's constant fucking monks and halbs and champs, and the English with it's 100 elite fucking longbow that mows down everything you have once you get inside their range backed up by cavalier. I fucking hate longbowmen more than any other unit in the game. They are too powerful and broken, and then combine that with the constant annoyance spam from burgundy.

My point is, either the campaign difficulty is a fucking lie with it's one sword simply because of this one mission, or this mission was not playtested. I have been trying this mission for over 6 hours doing the first 30-40 minutes over and over getting bombarded by longbows before I could click up to imp or get an army strong enough to counter them ready. It's so unfair how little time you have to prepare for this when up against the game's biggest bullshit unit.