Sonic 3 and Knuckles playthrough Part 18: Hidden Palace and Sky Sanctuary Zone {Sonic}
2No enemies in the Hidden Palace. Just collect the Rings,and at the end you'll finally face off against Knuckles himself. Just keep jumping into him,and when he glides avoid his Knuckles to hurt him. Can't be hurt during a spindash. When he goes down,Dr.Robotnik shows up and steals Knuckles's Master Emerald! Follow Knuckles and you'll reach the Sky Sanctuary zone. Lots of areas here are falling apart,so keep moving. Robotnik already has his robots in the area too. In 2 areas,you'll fight a robotic clone of Sonic,using a machine from Sonic 1 and Sonic 2 that Robotnik used. At the end of the area,you'll fight him for real. He fights like the robot clone from the end of Sonic 2,just hit him from the front and watch out for his spindashes. You'll jump into the Death Egg afterwards.