To take advantage of Brütal Legend's awesome soundtrack, you'll want to find the Mouth of Metal upgrade early on in your adventure. When free roaming in The Deuce, find a location with red flowers around a metallic structure -- these are entrances to Motorforge. One of these can be found just northeast of Bladehenge, and another is on the northeast face of the mountain where the Kill Master resides. Play the Relic Raiser Solo nearby and you can drive in with Deuce. Your first reward is the music player. This allows you to change up the tunes when driving. Awesome.

Perform the actions below to unlock various rewards:

• Increased Nitrous Power - Beat all Racing Missions
• Spike-Quilled Axe - Beat all Hunter Missions