Pretty good dlc, first time in a long while I felt creeped out playing a game, saw some mechanics I wish they had in the main game, not too thrilled you need a ridiculous amount of skill points to get the perfect ending but besides that it was good.
I am not sure about DLC, but anyone is killable, until you recruit them. It has been fun, it reminds me a lot of Firefly.
the humor is rather good, and so is the gameplay.