Not sure if this will be of any use or not. It was a concept I came up with a while back- only drawn it today though. Egg Vortex- annotated. 1- SIDE ASSAULT. MISSILE LAUNCHER. 2- LOWER ASSAULT. FIRE LAUNCHER. 3- UPPER ASSAULT. CLUSTER BOMB. 4- AFTER A FEW ASSAULTS. ROBOTNIK LEAVES HIMSELF OPEN. Egg Vortex may feel like a "large boss", but really its only because it hides within the tube arena. It isn't even that complex in its attack pattern. However, if you want to use it, feel free. I'm not sure which level its more suited to though.