Like Swag Factor, this concept of "Killer Instinct" is an in-depth look at one of the main, yet seldom discussed factors involved in GETTING LAID.
Killer Instinct can be considered the "second half" of Social Freedom.
Killer Instinct is how comfortable, assertive and determined you are in taking things to the next level.
While Killer Instinct is a 'scumbag' attribute, it's not exclusive to that type of guy.
While "Instinct" suggests that it's a natural characteristic, it's not - it can be developed.