Melee Hacker

 is a challenge perk in Fallout: New Vegas.

The requirements for this perk aren't entirely straightforward. First you have to complete "Up Close" (50 melee kills), which will unlock "Up Closer" (75 melee kills) which you'll also have to complete. Completing "Up Closer" will unlock "I Can Do It One Handed" (10,000 damage with one-handed melee weapons) and "Two Hands are Better than One" (10,000 damage with two-handed melee weapons). Those two challenges will reward you with one rank each.

Effects
Level 1: +5% Melee attack speed Level 2: +10% Melee attack speed