So does Sansa get to say "You know nothing, Jon Snow"? Because she called what was going to happen to Rickon. It didn't make that scene any less heartbreaking, either.
But what about Wun Wun? OMG, he was amazing! Wun Wun saved Jon's men as those Bolton men and the Umbers were closing in on the remaining Stark/Wildling forces. He was the only one who was really effective against that shield wall and he gave them all a fighting a chance. But that crush of bodies was probably one of the most terrifying things I've ever seen! At first it looked like one of the men was trying to make sure that Jon was protected. But the sitatuation turned bad in a hurry, and Jon came so to being crushed by the mounting dead and wounded. And Small Jon Umber was just brutal as he and his men came in to finish off those who were able to climb off of that pile. The fight between Tormund and Lord Umber itself was gut-wrenching, and I really didn't know if Tormund was going to survive.
And when Wun Wun broke down the gates of Winterfell and took on all of those Boltons? Watching it was exhilarating, but all of the arrows and spears he was taking clearly took their toll. And then that lousy f*** Ramsay Bolton killed him! Giants were so incredibly scarce beyond the Wall. After the battle for the gate between Mance Rayders forces and the Night's Watch, and the massacre at Hardhome I was left wondering if Wun Wun might have been the last of the Giants. And now he's gone too. Watching Jon take those arrows in his shield and then beat Ramsay to a bloody pulp was incredibly satisfying. But it was that much more satisfying to see Sansa get to exact her own revenge on the Bastard of Bolton.
But at what price? I really think that the price of Lord Baelish and the Knights of the Vale coming to the rescue of the Stark forces will be Sansa's hand in marriage. She's a widow now that Ramsay is dead (despite her previous marriage to Tyrion), and the only known, legitimate heir to the Stark name. Littlefinger has built a significant power base as the Lord of Harrenhal, the power behind the Vale and the North, and he might have found his ladder to the Iron Throne. Especially since King's Landing appears to be on the brink of major destabilization.
Jon Snow said in the coming attractions that the Starks have many enemies now, and he's right. Their own forces were seriously depleted in the Battle of the Bastards. The Boltons are gone. And now the Umbers, Karstarks and Glovers are no longer loyal to House Stark. The North is incredibly weak now, and if the White Walkers breach the Wall, what's to stop them from completely sweeping through the North?