Sally Likes Blood

Sally Likes Blood is a campaign achievement/trophy in Call of Duty: Black Ops. It is best to use a sniper rifle to get the kills.

In order to unlock this trophy, you must kill 3 enemies with a single bullet. If you are lucky this will unlock while playing the campaign, but if not then here are some easy ways to unlock it:
 * In the mission Victor Charlie you will come to a point where you are clearing a village after blowing the base with C4. While attacking this village a boat will approach from the river, if you shoot the enemy standing at the front of the boat, you should unlock this trophy.
 * It is possible to unlock this trophy/achievement in multiplayer zombie mode. While using a shotgun, wait until there are 3 zombies in close proximity to one another. You can fire and hope for a collateral.
 * It is possible to obtain this trophy in dead ops arcade. When using the chain gun you will be able to kill 3 enemies i with one bullet.

Trivia

 * The trophy is a reference to one of the pistols on the cover on Black Ops, as it has 'Sally' carved onto it.
 * This achievement is possible and much easier to be earned in Zombie Mode. However it appears that it is not possible to earn the achievement while Insta-Kill is active.
 * Since the achievement require players to use a single bullet, using crossbow with explosive bolts does not count..