Do a m-l-l-l-heavy combo until you get to a L3 but don’t launch it until your opponent is near his L3 or at it also. After you launch it, a couple of things happen. He gains a nasty fury, and the opponent will be stunned. Depending on the level of stupefy you have, you can do one of TWO combos coming out of the L3. m-l-m lllmm or m-m lllmm. As soon as you finish one of the combos, launch your L1 because you should be at one because the opponents power is full. You gain two bars of power and you have another choice to make. Either launch that nasty L2 or build to another L3. Building to another L3 could be tricky but wit practice it’s really easy. To get to another L3, you want to hold block after you previously launched that L1, the opponent should hit into your block and as soon as they do, you reparry the second hit and unleash doom’s main combo which is the mlllh. You should be at another L3 and you just rinse and repeat. You must’ve not been playing him right at all cause he’s one of the best champs in the game. His rotation could seem frustrating at first, but the more you practice the more it becomes second nature.