So, just so you know, currently there are no costumes for the engineer class from Gorluxor's Tower, Dead City or Tep's Pyramid. And, most probably, we won't see these costumes in the future.
Maybe some of you were tempted to open a Demonic Box on their Engineer Reinc, like I was. Now you know it's pointless. I don't know what would happen, and I'm not going to risk loosing a demonic box just to find out