Skills

I first go with Alpha Strike for easier farming. Then I max out Wuju Style ASAP, while choosing Highlander when possible and Alpha Strike when needed. I max meditate at the end.

Double Strike Great passive for this type of champion. 2x damage with 1k crits. Do I need to say more?

Alpha Strike Great tool for farming and even better for catching your enemies. When maxed it deals 300 damage, which is respectable, since you get no bonus from ability power.

Meditate Usefull when maxed out to counter ultimates from champs like Karthus, since you get 300 Magic Resistance and Armor and you get healed for 700 Health over 5 seconds. But it's not worthy leveling up in the begining, because this is not AP Master Yi Build.

Wuju Style When maxed out it's passive is 35 more damage. When u activate it u get 70 damage. Let ur brain do the math :)

Highlander Awesome ultimate. Good escape mechanism, good chasing mechanism,...Let me just count the awesome things of this ulti:
-When maxed, 80% Attack speed boost for 12 seconds
-Immune to slow effects while active(Ashe's frost arrow, exhaust,...)
-If you kill a champion, while Highlander is active, your cooldowns reset, if you get an assist, your cooldown is cut in half.