In Sonic 2 Delta III, the speedy hedgehog will have to fight Dr.Robotnik himself and take down lots of badniks. He will have to overcome dangerous hidden quests to collect lots of gold rings. You will have to control Sonic and Tail to overcome the levels as quickly as possible, stick to the ground or overcome difficult steep slopes to defeat the doctor's plans. After collecting the gold rings, help them get the Chaos Emerald and save the day Dr.Robotnik's plan takes place.