Blast Mastery

 is an achievement in Fallout: New Vegas which is awarded for successfully dealing 10,000 points of damage with energy weapons.

Easy way to do this is, if you haven't yet done the the sidequest in vault 11. You can setup a save right before the you activate the vaults computer mainframe. And have a low level character and use the vault mainframe qlitch for exp. until you hit max exp. and level.( the glitch is where you use the computer and tap the 3rd choice "> Automated Response: Vault 11 Solution". Then build your character according to energy weapons. This also applies to the other Achievements on XBOX that require the 10,000 damage.

Behind the scenes
Like the Metal Master armor-Metal Blaster combo and raider Blastmaster armor, the title of this achievement is a reference to Master Blaster.