2 Player cheats

Getting emblems in 1P or Challenge mode unlocks multi-player modes.
Collect the following number of emblems to unlock each:

Game              # of emblems
Team Battle       20
Special Stage     40
Ring Race         60
Bobsled race      80
Quick Race        100
Expert race       120

Metal Skin for all characters. Collect all 141 emblems

Metal 2-player characters

Hold A+Y after you select a level. Then, your characters will be metal versions of themselves!

Team Chaotix Song

Successfully complete story mode as Team Chaotix.

Get Super Hard Mode

To get super hard mode you must complete all the missions and get an A ranking on all of them.

Cheating Death

At the end of the Bingo Highway, you will go through one more pinball table. Here, you might lose a few lives unless you use this hint. When you get to the beginning of the last pinball run, choose at least one of the characters (I suggest speed characters, but whatever you do, DO NOT USE THE FLIGHT CHARACTER! TRUST ME!!!) and walk slowly to the starting spot. 9 times out of 10, you will go down the tube alone. If you fall of the end, switch to another teammate and, if none of them followed, you will end up back at where you started. You won't die whenever you fall off, thus cheating death.

Defeat Final Boss

Metal Madness

A rank requirements: under 07:00:00!

Turn around and break a wooden box to get the blast gauge UP. Use it to take out a bit of Metal Madness's life and then hit another wooden box to get another blast gauge UP. When the team blast gauge goes down, use team blast again. Metal madness should be low on life so use thunder shoot to finish this form off. Once defeated, you will take control of team chaotix.

Team Metal Sonic

How to unlock team Metal Sonic you must get all the emblems in the game. Once you do you have to play VS mode fifty times while both teams are metal. You can become metal by holding A+Y after you select a stage in VS mode. Once you have completed that you will face Metal Sonic again with all characters in their metal form. If you beat Metal Sonic you will have his team on first player mode and on VS mode. When you complete team Metal Sonics story than stead of facing Metal Sonic you will be facing Sonic. The characters in team Metal Sonic are Metal Sonic, Eggman, and Chaos.

How to beat the egg hawk

This is quite easy. Don't go for the hints. Just keep running as the runner (Sonic, Shadow, Amy etc.) and attack Eggman while spinning with the power dude (Knuckles, Omega, Big, and Vector.) If you go in fly formation, it will just slow you down. Even with both motors out, he is still faster then Cream, Tails, Rouge, and Charmy. Soon you should beat him.

Railroad City

When you are on railroad city and grinding, when you see the rail that has 3 sections and trains heading towards you, use tails as leader. If you get hit, fly up and onto the rail or when you see a train coming, jump to the next one.

How to beat Robot Carnival

This boss comes right after the Casino Zone action stages. You may have your own way to beat this, but here's my strategy. With any team, the speed type character is almost always best for this battle. Use the homing attack on almost all enemies. After you destroy the first team of robots, wait for the second and so on teams from the side of the field (not quite at a side). The reason for that is that there are some flying enemies. Some flying enemies are too high to hit with that for that, use the Thunder Arrow. That should do it.

How to get to the Special Stage

This is how to get to the Special Stage. When you going through the courses you may notice this cage with a shiny key in it. What you do is you get Knuckles and punch it open. Now there is one catch, if you get hit by an enemy or fall of the edge, you lose the key and you have to find another key. If you get to the Special Stage, you find your self running in a big tube. The point is to get to the end before time runs out. You need to boost once in a while, but to boost, you need to collect balloons. To increase your time, run through the changing gates. Something happens when you collect all the Emeralds

Easy way to beat Egg Emperor

This really isn't a cheat but, its a good hint that should help you out. When your  fighting Egg Emperor as Team Sonic, ok first when you start out, there are three level up boxes, get them. The first attack Egg Emperor uses, he will do a slash move with his sword, first he will slash forward, dodge that by running to the left or right, then he'll do a slash you cant dodge, jump over it, he will do this a second time, repeat this step. You will have to chase him till you get to a giant platform. Don't attack him, attack the missile launchers, then the enemies he creates, do this till you get your team blast, use it, it will hurt him and make him drop his guard attack him where there is a glowing circle. Repeat this step till he is dead.

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