Here is the secret on how to wreck face with Robin - WUJU STYLE.

This build requires you to lol afk farm in the jungle 24/7 and/or set up great ganks for your lanes. Farm is essential for this build, and there should be minimal downtime in between camps. Only gank for your teammates if the enemy has pushed to your turret and is badly positioned. Otherwise, you're going to have to constantly farm in order to avoid gold starving, and to bust out your items before anyone else in the game.

Advantages
Unbeatable Duelist - Assuming you've been nonstop farming in the jungle, and your team isn't incredibly behind, you'll be able to face any character 1v1, with maybe a few exceptions *cough* Atomic Wonder Woman

Great Split Pusher If both teams are occupied, whether it be jungling or facing a stalemate in one lane, Robin's great at solo pushing another lane! Not only will he have good clear speed and many methods of escape, but you'll also be farming gold for your top notch items.

Disadvantages
I'll get back to you on that.

Start with a tier 1 Mega Rod and Knife to quicken your jungle clear speed. As you approach late game, replace these items with your main ones.