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Cheat codes for GUNVALKYRIE

Platform: Xbox

User rating: 5.6

Page visits: 1702

GUNVALKYRIE Unlock Challenge Mode
To unlock Challenge Mode, which allows you to go through and select any level you've played, beat the game once (a feat which is more difficult than it sounds).

GUNVALKYRIE Unlock Kelly-Level 3
In order to unlock the third version of the Kelly, collect all of the Halley Cores in the game.