When attempting to complete the "Confidence Man" quest and rescue Vadim from the brewery, Bull and Goucher cannot be killed and you cannot untie Vadim. Seems to be that Bull and Goucher are flagged as essential and therefore lay crippled on the ground but can't actually be killed. Also, when loading up a old save before entering the brewery, the player is now invincible. To load an even older save would mean loosing 4+ hours of gameplay and a heap of modifications to my base. I am not playing any further until this is fixed. It's a shame because up until this point the game has been very smooth and enjoyable.