Started as Muscovy.
Took Tver (vassalised them, but whatevs) and then Yaroslav and Ryazan.
Novgorod declared war on Tver, I came in on their side, did rather well, I thought, to hold 'em back on my Northern border.
The Golden Horde decide to take the opportunity to take me from behind, the dirty bastards, and declare war on my Southern border.
I immediately ask for a white peace from Novgorod, and due to their skyrocketing war exhaustion, they accept, allowing me to focus on the significantly larger Mongol army. I field 14k troops, versus their ~30k.
I have my troops in one stack (muy importante for later) and am basically doing a whack-a-Mongol as they take and I retake my various provinces. My war exhaustion goes up and up. And up. Oh god it's still going... so many revolts man, I lose provinces to the rebels.
Anyway, I manage to retake enough of my provinces and smash their armies enough to get 1% warscore, which is enough to get a White Peace with them. I retake the provinces from the rebels.
Unfortunately my truce with Novgorod had expired, allowing them to declare war on me from the North once again.
Now proceeds the same whack-a-Russian as they take and I retake provinces and UTTERLY DECIMATE THEIR ARMIES HAHAHAHA. So many peasants, just go away for fuck sake. I take one province from the Novgorods and all their money in the peace deal.
Unfortunately my truce with the Golden Horde had expired, allowing them to declare war- you get the picture.
Whack-a-Mongol, peasant revolts. I decide to take out a new peasant revolt in passing them, and the Golden Horde move in and camp out around the edges of the battle, watching. Waiting.
I assume, anyway, their huge stack of 25k troops sit there as I smash some rebels. I win the fight, and IMMEDIATELY lose to the Golden Horde, and my entire army disappears.
Well, fuck that, game.
Europa Universalis III: In Nomine