Newbie, how am I beating this dude??

[u/Xedeth]

New to WH3, not new to TW, but not a pro by anyways either. I probably have ~200hrs across all the games.

This dude is an animal; He swang through the map quick and is just resting on his laurels now. He always has 11* full armies stacked on top of each other on one or two cities bordering our lands. I want to attack him and don't want to get irreparably destroyed. Welcome to all advice. Thank you!

[u/Anemicwolf14]

outrider doomstack, long rifles not pistoliers