"Explode into Blood" is a song that is based on the gameplay from Call of Duty: Black Ops.  The music video was written, performed, and produced by Mahalo Video Games Team member Chad Neidt, and is available to download for free.http://www.sendspace.com/file/v8y8v9 

A video for the song was also published on Youtube, showing different cut-scenes recorded during the second mission from the campaign mode of the game. The mission is called Vorkuta, and follows the main character, Alex Mason, who tries to escape a Russian prison. The video for "Explode into Blood" was published on January 27, 2011, and was well received by viewers, recording over 30 “Likes” and only four “Unlikes”. The song is not included in the official soundtrack of Call of Duty: Black Ops.http://www.youtube.com/watch?v=nLE_PsCv7tY 

The cut-scenes that can be observed in the Explode into Blood video, feature a character from Call of Duty: Black Ops, named Viktor Reznov. He also appears in Call of Duty: World at War as a Sergeant, but in Call of Duty: Black Ops he appears as a prisoner who helps Alex Mason to escape the Russian Gulag.http://callofduty.wikia.com/wiki/Viktor_Reznov 

In both games, Viktor Reznov uses various weapons, such as: the AK-47, the Scoped Mosin-Nagant, the TT-33, the Knife, the Machete, the Makarov and the M1911. Viktor Reznov has many nicknames in the COD video games, including "The Wolf", "The Hero of Berlin" or the "Russian Dog". According to the biography provided in the games, Viktor Reznov was born in Russia on April 20, 1913, but no date of death is confirmed. It is believed he died on October 6, 1963. In the Call of Duty series, Viktor Reznov is a character voiced by Gary Oldman.http://callofduty.wikia.com/wiki/Viktor_Reznov