Awesome guide and as Psyko said you hit for 330 almost every hit its crazy especially once u get that BestFriend Sword

The thing is at this stage in the game the critical strike you got your hitting for 330 almost every hit so its ok to hold off on the bf sword

Biggest problem i find with it that the BF sword comes too little too late. most people build Bersekers-> zeal-> BF sword or something similar. the problem is that you're going to have sub 100 damage for an untenably long time, and while you may have epic AS, a single BF sword increases your AD by almost 50%, while stacking massive AS does not achieve this.
Finally you have no black cleaver, which is possibly the best item for xin in existence (ton of AD with good AS and great unique).
the ability to double TTS and AC is great, as is the epic Movement speed is good, but the simple fact is that your DPS sucks kind of hard, so unless you restrict yourself to ganking people on a quarter health, you run the risk of someone just turning around and smacking you.
I don't recommend this guide. fix please.

Please comment and rate its honestly the best build ive found for Xin