Just to add my take on Last of Us as someone who has played the games (just replayed both 1 & 2) and watched the seasons. Season 1's focus was on the characters and the story as a whole, action was secondary. The change to lessen action and violence was not a big deal as the first game's theme focus was the characters and their relationship. Action heavy chapters like Bill's town or the tunnels in the game were not needed as these chapters don't really have an effect on the story or characters. The show could adapt their own episode revolving around Bill's town to focus on bringing more depth to the characters and enhancing the story. The main purpose of Bill's chapter in the game was to introduce some game mechanics (nail bomb, trip wire), the bloater and get a car to drive west. The game mechanics don't translate to live action and the bloater was introduced later in the show. This is an example where the show runners made a major change in the show that made the show better while not deviating from the theme of the game.
The second game's theme is the circle of violence and Revenge, i.e. Joel kills Abby's dad, Abby Kills Joel, Ellie Kills Abby's friends, etc. The first few episodes were good for the most part. The show lost some emotion from the story due to placing certain flashbacks in these early episodes and changing some timeline history. However, without the next seasons finishing their vision, I could live with those changes for now. The major problem I have with season 2 is Ellie's time and actions in Seattle. As smugpugmug stated, in the game she is a bloodthirsty monster. We see her decent into darkness happen over the course of the three days. The show condenses way to much into too few episodes and in return we are left with a product that does not dive into the characters or show Seattle as the battle zone between feuding groups like in the game. The season should have been 2-3 more episodes with each day in Seattle being an extra 20-30 mins to flesh out Ellie's violent nature and foreshadow more about the WLF taking down Fedra and their war with the Seraphites. Also, make Ellie competent. Why is she losing a 1v1 to a stalker in episode 1.
I am the only one in my group who watched the show that also played the game. Everyone else gave it a positive review and is very excited for season 3. I am much more neutral on it and I'll rewatch season 2 again. I would recommend to either play the second game or watch the cutscenes on
Youtube over watching season 2.