1080 Avalanche - Platform: Gamecube

Unlock Extreme Match Race: 
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To open up a hidden match race mode, "Extreme", beat 
all three standard difficulty levels. Once you have 
beaten Avalanche Alley: No Way Out, the Hard final 
challenge, wait for the credits to finish. The extreme 
course will now appear on the Match Race main screen. 

Final Challenges Cheats:
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You can jump right to the timed final challenges in the 
game's Match Race mode. To do so, enter the following 
codes at the options screen: 

Novice Final Challenge:
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Track Name: Sub-Zero Assault: Spinal Damage
Code: JAS3IKRR 

Hard Final Challenge:
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Track Name: Sub-Zero Assault: Ballistic
Code: ZAUNIKFS 

Expert Final Challenge:
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Track Name: Avalanche Alley: No Way Out
Code: EATFIKRM