We see the beginning of Theon’s tragic downfall as he chooses pride over survival. If you'd like to dive deeper into this episode: Character analysis of Tyrion’s leadership Comparison between the book and the show Predictions for the Battle of the Blackwater Which aspect of the episode
At Harrenhal, Arya uses her final "death wish" from Jaqen H’ghar to facilitate a daring escape with Gendry and Hot Pie. Game of Thrones Season 2 - Episode 8
King Robb Stark breaks his political vow to the Freys by falling for Talisa Maegyr, a move that will have haunting consequences. We see the beginning of Theon’s tragic downfall