Total War: Warhammer 2 - Heroic Empire Victory vs Tier 4 Drakenhof V.Counts

With a bunch of archers on force march, a ragtag band of swordsmen and spears, Gelt the magnificient and an Arch Lector, I fought against a guarded tier 4 Castle Drakenhof... and won.
The lull in the middle was me deliberating just running out the time and going for it on a second attack, but eventually I decide its worth the try.
Oh, was it worth the try.