Spider 2 receives (230+100%)+(230-100%)=460 damage (-160/300)
Spider 3 receives (230+100%)+(230-100%)=460 damage (-160/300)
Spider 4 receives (230+100%)+(230-100%)=460 damage (-160/300)
Spider 5 receives (230+100%)+(230-100%)=460 damage (-160/300)
Prisoner receives (230-50%)+(230-50%)=230 damage (-229/150)