Attack on Titan 2 plays very similarly to the first game. However, instead of playing as the lead character Eren Jaeger, you’re literally a nobody who is only remembered by a journal they left behind. The gender and the name of the character are determined by the player. Your character is a 104th regimen cadet who is training alongside the characters known from the first game and the anime it’s based on. If you haven’t seen the anime, you’ll probably want to do so since the story will be spoiled for you otherwise.