Powdermaster DLC adds a new game mode, you now start only with 1 character and if he dies, run is done. The new character is somewhat interesting in himself and it is understandable that he is not available in normal mode as he is a bit of a one man combo machine. However because of only having 1 character the game mode relies more heavily on RNG as it can make recruiting further characters too difficult. I can win every time in normal mode if I wish, but I feel unfairly punished by bad recruitment luck often as Powdermaster, all in all a different way to play the game.
