Hands down, [url=http://en.m.wikipedia.org/wiki/Simo_Häyhä ]Simo Häyhä [/url], also known as [b]White Death[/b]. Simo Häyhä was a Finnish sniper with [u]505 confirmed kills[/u] over a 15-year span. This was all done with an old modified Mosin-Nagant rifle (you can pick one up at Big5 for $100-$200 with a sling and bayonet) and [i]iron sights[/i]. He stood 5'3" tall and focused on staying as invisible as possible. One of his many tactics involved packing his mouth with snow to cover up steam coming from his breath. He was eventually shot in the face, but did not die from the wound. [i] When asked if he regretted killing so many people, he said, "I only did my duty, and what I was told to do as well as I could."  [/i] He died in 2002 at the ripe old age of 96.