On February 1, 2011 Treyarch released on Xbox 360, a map pack DLC for Call of Duty: Black Ops, called First Strike. The DLC will be available on PlayStation 3 and PC starting March 1, 2011, and will cost $15.00. To purchase the First Strike DLC, Xbox 360 owners must pay 1200 MS Points.http://callofduty.wikia.com/wiki/First_Strike

First Strike offers one zombie map, named Ascension and four multiplayer maps: Berlin Wall, Discovery, Kowloon and Stadium.These maps are interactive while Ascension features two new weapons and two new perks.http://callofduty.wikia.com/wiki/First_Strike

Mahalo’s video gamers created a series of videos which were posted on YouTube with the purpose of revealing the new features introduced by Treyarch in this DLC. Some of these videos are focused on the Ascension map, since this map offers more content. Additionally, Mahalo’s gamer shows how to play Ascension in Call of Duty: Black Ops.

The action in Ascension takes place in an abandoned Soviet Cosmodrome. Beside the fact that this map introduces new weapons and perks, is also keeps the characters from other zombie maps. These characters are: Tank Dempsey, Nikolai Belinski, Takeo Masaki, and Edward Richtofen. Some of them also appeared in other Call of Duty video games. For example, Nikolai Belinski is a Red Army soldier who can be seen in Call of Duty: World at War. 

On this map the goal remains unchanged. The player must survive as long as he can, against the waves of zombies, but to do that he can now use two new weapons: the Gersch Device and the Matryoshka Dolls. Additionally, the player gains access to two new perks: PhD Flopper and Stamin-Up.http://callofduty.wikia.com/wiki/Ascension

Players should not be concerned, because on Ascension they will be able to use almost every weapon available in the Zombie Mode of the game. Some of them are the SPAS-12, the FAMAS, the Galil, the Crossbow and the G11. Mahalo’s Video Games Team published on YouTube a series of educational videos which will teach players how to use almost every weapon accessible in Call of Duty: Black Ops.http://www.youtube.com/view_play_list?p=BC89ED1483717347