As the title suggests - the final battle between Sonic and Dr Robotnik. With no rings, a hit will result in instant death.

Robotnik has protected himself inside 4 capsules. Every 20 seconds or so 2 capsules will come onto the screen at random. Robotnik may or may not be inside one of them. Attack the one he is inside. Being trapped above or below one of these capsules will crush Sonic instantly.

When they retract off the screen the plasma gun to the top right of the will begin to charge 4 shots. They will home on Sonic so be sure to look for a safe gap.