"You might be right on him being a hostage, but I think you should hold off on the flashbang. No need to alert anyone else that might be in the area if we don't have to. I'll move up and take out the guard on the right. Bit, you get the one on the left as soon as I take out mine. Once the guards are down, I want everyone to move up and secure the area around the elevator, make sure that mechanic knows he isn't getting away. If he tries to contact anyone, we'll need to neutralize him quick." Rareth said, motioning for the others to stay back while she moved up with Bit. 

For Rareth, staying out of sight wasn't too complicated. The guards were just around a corner, so she was able to stay concealed until she got close. From there, she made use of her magic to cloak herself in invisibility. Even the most skilled magic-users could not become perfectly invisible, and it was draining to maintain, but she only needed to move a short distance to get behind her target. The two guards, a Masulu and a Human were talking amongst themselves while the mechanic, also a Human, worked. They weren't quite attentive enough to notice the shimmering in the air near them, so Rareth waited for a few moments with her blade at the ready while Bit got into position. Once she felt she had given him enough time, she thrust her blade straight through the Masulu's head for a quick, easy kill.