KMST 1.2.410 - Skill Changes

Assassinate Points were officially renamed to Killing Points (kp). Assassinate no longer generates Killing Points. It uses 5 Killing Points to do 2.5x damage. Going by the description, it cannot use less than 5.
Shadow Instinct now gives Killing Points passively whenever you attack enemies at some unmentioned rate. Could be 100%, could be something really low. It appears to be the only other skill to now use Killing Points since any mention from other skill's descriptions (Meso Explosion, Boomerang Step) was removed. You gain 6 Weapon ATT for each Killing Point you have when you use Shadow Instinct.

I don't believe that the actual KP use values were removed from the skills, just the descriptions. At least, going by what Fiel posted.