okay guys for 5v5 mid u really have 2 harass them beginning game so use Mark of Assasin and twilight shroud to get close enough 2 minions and the champion to hit them while Mark of assasin on and crescent slash when you hit level 6 that when u go after the champion if its someone squishy like tristiana or teemo you will be able to kill them really quick but if its a vlad or anything eles it might take awhile so make sure u have ignite and exhaust when u charge in because those will help u kill them faster. when u actually charge in u will start out using shadow dance 2 them and then mark of assasin and right after crescent slash (your twilight shroud will not be used at this time) keep on spamming shadow dance and when u run out or around 1 more shadow dance u will have your mark of assasin back up, use it and they will prob be dead by then or while ur spamming shadow dance. when ur in a group fight akali loves squishies so u go after them first. when u go in u shadow dance into action and then twilight shroud right away to go disapear so no one can hit u. u use mark of assasin and shadow dance like crazy if they are not dead (this usually happens with tanks if they are not dead cuz by this time all the squishies and support and dps will all be dead) use ur mark of assasin and shadow dance because shadow dance will prob be up by now and the dps from you and ur members it will prob be dead.
thank you for looking at my build and guide lines have fun with akali