The reason why I have chosen this build is because I have had good luck with this myself..

I will explain in the other chapters why I choose this build.

The reason why I have Exhaust is in situations where you wish to gank (one of the situations where Nocturne is optimal), getting out of tight situations and a lot more. Flash is basically the same, you can use it while chasing champions or dodging Ashe's Enchanted Crystal Arrow and so on.

My masteries are focused on most damage possible, because you want to play a bit more aggressively than what would be normal.

The reason why is because I do this is because I like to play an agressive role, and win. Nocturne is the perfect character for that.

You have to max Duskbringer first, no question about it. The reason why Shroud of Darkness is maxed before Unspeakable Horror is because of the bonus attack speed.

Remember to use Duskbringer as much as possible, even though it is very mana consuming early game, it will be worth it. You take a lot of damage people dont really pay attention to, and you can also chase them with the bonus movement speed. Which can also be used to escape.

Also remember to play a bit defensive early game, then go kick them champions.