Hi all, I hope that my build will help you as much as helped me. You have to farm all the time and kill enemies whenever its possible. In deff build I've inspired by Chaox. When u are fighting 1v1 with someone wait for good while and when u will have lower percentage health than your oponent use Equilibrium Strike (E). Also remember to use Hitten Style (W), because its true dmg and 75 more dmg is really great thing. When I'm Irelia im at mid or solo top. Irelia is great for 1v1 and also for 2v1. When you are fighting mid use low hp of cripps and fast strike to them with your Q to kill them and then use Q to get to your enemy. They will be afraid of you and start playing deffensive.

These 2 sumonner spells are good for escaping from fights when u are on low hp and also good for your team and offense.

Doran's Shield keeps you long time on a line.
Doran's Blade makes you stronger and 3% lifesteal are also good for 2v2 line (when you are 1v2 top choose Shield)

You have to farm all the time and kill enemies whenever its possible, so farm, farm and farm :)

When you are fighting vs. AD team build Ninja Tabi instead of Mercury's Treads buy also, Elesia's Miracle for Tenacity and Thornmail instead of Force of Nature. My build is universal.

Normal game with irelia on EU east xP