The only way to do it is get an extreme ranking on every mission no other way.
at the end you turn super sonic and kill chaos.
Wait for the boss to activate gravity dive keep launching off the plates until you hit him it is easy once you get the hang of it
When you go to the grand prix race, you get easy money.
You can't get sonic in ssbm!!
no.all passwords are extremely long:(
You don't need any cheats! I defeated it TWICE without cheats, and it was EASY!
Easy eat a chao with all characters and go to any sonic level.
all you have to do is beat tabuu in the end of subspace. be aware! he is even very hard on easy mode!!! I unlocked Sonic in brawl by getting a score of 15 in a time brawl. I would recommend having the score display on, if you've unlocked it. I got it by completing 20 classic modes with different characters
Pretty simple in my opinion Sonic and Shadow are pretty much invincible while in Super Forms. They already would have a strong chance at winning a fight in their base forms, much less, even one of the two Super beings could easily destroy both Mario and Luigi at once with ease. What Iām saying is that it would be too easy for Super Sonic and Super Shadow to win. Not much an argument meant to be had there. Sorry everyone.
I haven't played Mario vs Sonic, but super mario 3d is easy, fun, and good, though it highly lacks in story as do most mario games.
Because then it makes the game too easy because then you can blast threw the levels and pretty much cheat your way to getting all the emblems to keep the game fair and challenging they eliminate super sonic being playable.
Really Easy, you unlock SCR-HD in free race after you have beaten the Babylon storyYou unlock SCR-GP by beating the Babylon Story