Guess this is the GM Bloodlust syndrome that Warhammer breeds...
Had a player shadow a nasty cultist npc, and then the npc noticed him, but let him follow him into an ambush.
A gambler PC, vs. a hardened mercenary cultist, was an ugly sight, but the player got insanely lucky and managed to escape (after the cultist tried the new twin hand weapon style, but missed with 2 Chaos Stars, making him trip and fall) and run close to the other PC's, so **** close... the Mercenary proceeded to Double Strike him of 2x7 damage (after soak, meaning he was struck unconcious), and then be ready to deliver the killing blow, when the Bounty Hunter PC shot the NPC and delievered the Critical wound that rendered the npc's left hand fingers useless (think he scored 5 hammers, 3 boons and a comet on a shot where I gave him one extra purple for shooting in a crowd).
I decided the npc then fled.
But had he not been so insanely lucky, or had he thought twice about fleeing vs. fighting, or had the cultist not failed his first attack, or had the BH not been so freakishly lucky on his shot, I would have had a dead PC (his second session...). He did learn an extremely valuable leason, Warhammer is all about pain and suffering, either you deliver it, or you receive it