With Raiden (recommended), Johnny Cage, or anyone else with a fast weapon attack (Black), get as close to Moloch as possible. When you get close, attack him by pressing Black. While you attack, hold Up, which makes you circle around if you do not press Black. Then, if you hit him, keep pressing Black. He will not be able to attack back if done fast enough. If you hit him, you do not need to actually hold Up, but keep your finger on it. If he blocks, then finish Black attack (let the combo finish) and hold Up. You will start to circle him. Most likely he will attack. Sometimes he may hit you, depending on what move he does. However, get back to him and start over . If he does not hit you, while he is in the midst of his attack, keep continuing the technique.