If anyone wants help with co-op arena/adventure on crushing I will gladly help you. I am online right now so you can add me or you can tell me to add you. I have completed all 5 maps on crushing and I have 18000 NPC kills so I am a experienced player.
I wish you could get me either Chloe's hat or Elena's cat ears. However, best of luck as I continue to play Co-op Arena for lengthly amounts of times, I won't play Hunter Arena, hate the mode.