Braindead M1 Aim and Click
6549.2%Hold down M1 and kill them all. Dump all of your abilities (1, 2, &3) for max burst damage.
Your goal is 3 ~ 4 stacks in lane, 6 ~ 8 stacks by the time you max out Snipe, and at least 10 stacks by mid/late game. If you do not get enough stacks early, do not worry as there are plenty of opportunities for stacks late game. Buy glass cannon only in a true emergency.
Be advised that your power spike will begin to fall off past 30 minutes. Ending games early will benefit you greatly.