In my group I have a player that looks for ways to break the game. He will find all the combinations necessary to make his character unbeatable. Just to land a single ranged attack an NPC has to get through a soak of like 5 or 6, two red dice because of sense, a ranged defence of 2, and 2 ranks of reflect and improved reflect. Melee attack are just as difficult with a melee defence of 3 and a rank or two in perry. He will usually come out of a session with a damage or two if not unscathed.
How do I overcome this and make it challenging to him without killing all my other PCs who, even with the same XP total, get seriously hurt in the session. I could focus fire on him the whole session but that doesn't seen fair either. I think his only real challenge left is my Inquisitor one on one or Darth Vader.