What Do you need help on because i have beaten it 61x for me idk what you need help on but is marx soul on the game?
There is no update for Super Smash Bros. Brawl and there never will be. Not true. If you're talking about Brawl+, you need the Homebrew Channel, and then you need to go to the official Brawl+ site.
You do not need to download Super Smash Bros. Brawl, it is on a disc that you can buy at a game store such as GameStop or Best Buy.
depends
You can but you need a cheating device.
wiki is bad
Yes, You need to have the homebrew channel. Look it up.
only if you want to play online
400
He's not even in it. If you mean Dr.Mario, go on ssb wiki, it has everything you need for anything Smash.
you need a homebrew... http://wiibrew.org/wiki/List_of_homebrew_applications
He's available from the start, so you don't need to unlock him.
No. Brawl can also be controlled with the Wii Remote alone, the Classic Controller, or with a GameCube controller.