You can't. After you beat the game, you unlock a boss rush mode.
if i were you, I'd go onto Youtube and search for, "sonic rush adventure final boss."
You can beat the subspace emissary and redo the ruins stage, you can fight 450 brawl matches in group mode or, you can beat boss battle mode after completing the subspace emissary with fox.
after you beat the ghost titan, collect all sol and chaos emeralds. Then you will have 2 beat deep core.This is tough!!!
as sonic hit the bullets into the window|as blaze shoot fire balls into the window
u beat all the levels. for super sonic and burning blaze, get all chaos and sol emeralds
The Last Sonic Rush Boss Has A Giant Robot That Trys To Wack You With Its Arms
Henry Rush Boss has written: 'A brief history of advertising' -- subject(s): Advertising, History
Satisfaction
Rush E is created by Sheet Music Boss. search Rush E and you would see it.
play it and if your good you'll beat it.
Like the other bosses you have to fight, you have to hit the cockpit and when Eggman Nega uses his fans, you will have to press these two buttons back and forth until he gives up.