Hello, I have a question. Could someone explain to me how the immortal ghost floor (the blue ones) works? I lasted about 1 hour killing them and they never released the key to go up to the next floor... Could it be a bug or something I did wrong? It is worth mentioning that I went up with a friend who was under lvl 75 but I don't think that had any influence... And it doesn't seem normal to me that I kill too many immortal ghosts and the key hasn't come out... Not even the fake ones, much less the real one