Welcome to Atomic Destroyer! This zone isn't incredibly hard to begin with but that will change later....The warp tubes make more appearences here, and few paths lead to victory, so choose wisely. All around you'll find plungers. If there's a little platform next to it, then a bouncing egg robot will jump out of it. If there's a laser next to it, the laser will fire. In Act 2, you'll come to a warp tube that will lead you to a room with many warp tubes. The room will get very confusing unless you follow these directions. Jump in the first tube and follow the directions below trying to collect rings along the way: Left, Right, Right, Down. You'll land on a plunger which will release 3 bouncebots. After you kill them, jump up and to the right. Go up and right until you come to an elevator like the ones you encounter throughout the zone. This elevator will take you out of this confusing room. Keep going, avoiding the spikes and the plungers, and continue on through another elevator you'll come to. You'll come down to an area where you can continue down and to the left. If you don't go this way, you'll go in an endless circle and waste a lot of time. You'll come to some more warp tubes. Don't enter the first one on your right, fall in the pit and go in the one down there. If you go right when you stop, you'll get an extra life. Stop yourself by going as far right through the warp tubes as possible, then going straight down. You'll land on a spring without the power to bounce you back up. Now fly to the left and to the plunger. It's OK to hit it. Fly up and left. You'll see a warp station. (like a warp tube but it catapults you through the air instead of through tunnels) attached to a platform on the platform's left. Jump in it and go up. Then go right. Youll be shot to the end of the act. Finally! Now, for the final act of the game. As you start off, you'll get a lot of rings. Soon, you'll run into an open space and be chased by an old foe thats been waiting for revenge since Sonic And Knuckles - METAL SONIC!!!!! He'll knock you to the ground to start off the fight. Don't worry, you won't lose any rings with that hit. He'll begin flying in downwards arcs from either side. Smash him as he comes down at you. After a few of these, he'll activate his energy shield and will start flying across the bottom of the screen very fast. Jump over each of his flybys. He'll do this about 8 times and repeat the pattern. Fourteen hits does him in. Next up, Sonic (or Tails) Vs. Nack - but ONLY if you have all Choas Emeralds which is another story. If not as soon as an earthquake occurs, Nack is outta there faster than you can say "Show me the money!" Better yet, you have to fight Robotnik! He attacks in a bouncing machine. Eight hits kills him and all he can do is crush you, so take this guy out quickly. Next, he'll try and fire you down. He'll float overhead and after 3 direction changes, he fires a stream of fireballs straight down. Dodge the stream. He's even easier this time. Eighteen hits will beat him. Then, his flame thrower drops to the ground. The thing splits apart and flies off in two different directions, so JUMP! Next, he'll try to elecrocute you with the electric charge where the flame thrower was. Lucky for you, one hit kills this form. Just bang him underneath before he gets a chance to shoot you. His next form is much harder. He goes up and down in two tubes on each side. He alternates tubes so you know when to attack him. The hard part is avoiding the bullets flying down from above. When he tries to electrocute the whole chamber (he comes up and stays there while everything else stops) you need to get into the other tube. If this doesn't stop the process, it will protect you from it. After 8 hits, Robotnik will come up in the right tube and try to run away as usual. Except this time, you'll blow up his getaway platform, get the Yellow Chaos Emerald from him, and continue on to free Knuckles who's been trapped in a cage and realizes now who the REAL good guys are! Then, you and Knux shake hands as he finally realises who his REAL friends are. Aww, how sweet! Then, he glides off the stage and you follow him. The ending is nothing but Nack showing you how many emeralds you didn't get if you DONT have all the emeralds...