One of pt members should buy life scroll for hard and suicide on left sode spawner room while others go right side. Because if done so the left spawner room will be empty in about 3-5 min and you can go through. Mechanic of hard is to go through spawner room and then teleport and kill small robot. Then find teleport to next to other spawner room and then go through it (if it was the one where one suicoded then you can go straight through). Then kill small robots. Then find another teleport than teleports you to last section. There you have to go forward and kill certain mobs (i think,i died b4 that and came back for boss). Then just go and kill boss.
P.S i died 4 times in there and rest of pt went through dg while i was walking back to dg so what i wrote is based on what i was in without dying.