First of all I am pissed at all the people who leave a one star review for the sole reason that ellie is gay. Second tlou2 is the first game I've played that shows the point of view of both sides and says on the idea of having consequences for your actions and making every character even the ones that are just there to kill, seem like an actually human with feelings. Third the Ai is very sophisticated, for example if they spotted you before you kill someone they hide better and have better accuracy and are overall very tactile, but as soon as kill one someone shoots the name of who you killed and they become stupider showing that the ai has almost real human emotion.
Overall I reccomend this game and you should definitely play it but only if you've played through the first game.