Informaively I ran the encounter yesterday, it was pretty hard on them (i gave the monsters full life) one PC died (-10 HP), two of them dropped (-1 to -9 HP) and another one was disabled (0 HP). Granted the PC that got killed got hit by an attack of opportunity that was stupidly provoked by her moving through the Annis' threatened blocks 3 times -_-' Must say i was quite proud of my malice thanks for the help and tips guys!