Home PC Playstation 3 Wii Xbox 360 Top Cheats Latest Cheats Top Categories Forum Search Search Cheats Jebo Network Jebo Avatars Jebo Chat Jebo Chords Cheats Jebo Screenshots Jokes Guitar Lessons Home > Wii > Grim Adventures of Billy and Mandy > Unlocking the Vikings You have selected the following cheat: Unlocking the Vikings. Unlocking the Vikings If you want to unlock the Viking the first thing you need to do is beat story mode with all of the characters and then destroy every letter in the credits sequence. Other Cheat for This Game Home > Wii > Grim Adventures of Billy and Mandy > Unlocking the Vikings If you find any problems with the video game cheats on this site please feel free to contact us..