I was playing with 2 fairly experienced people and a guy who still had the starter items. The better guys left, and it was just me and the newbie doing on of those arena levels. Before the last room (since we had difficulty with the previous one) I asked if he thought we'd be able to do it before stepping on the party button with him. He said "i dunno" and then "c'mon!" so I decided to just go on. He died about halfway through and said "I'm afk, I'll be back in 2 minutes!" so I circled the arena for a good 5-10 minutes trying to kill the two healers in the middle of a mob of about 10 mechanical soldiers. I was able to finally fend them off. The guy never came back so I ditched him. starfish.
It's a good thing I had an Autogun or I probably would have died and ran out of Energy.