The Cryptic Lounge is a small room located in Faultline. It is a hidden room located under Freight Lift C, in which you can find Melissa and Mike. You can also find the Egg Hunter Badge in the center of the room.
How To Get There
Start out by going to Freight Lift C in Faultline. From the bottom of the freight lift doors, run straight and over the railing. Stand with your back facing the water. Go straight UNDER the ramp, between the bottom of the ramp and the stack of boxes. When all the way against the wall, run toward the crate of boxes (left if you're facing the wall). Continue all the way down this small path, and take a right into the Cryptic Lounge. Walk to the center to get the Egg Hunter Badge.