This is my standard build. This start is really good because get really good sustane.

This start get some damage. I'dont prefer this start.

This is my standard core bild. The Hextech gunblade is
really good on akali because give Ability Power + Spell vamp and get some Damage + Life Steal. Sorcer's Shoes give some magic penetration. The haunting guise give more magic penetration and some HP. Rylai's crystal scepter give more HP and if you cast
an spell to slow down the enemy. Deathfire grasp give a lot of ability power and CD reducation. The lich bane reinforces the damage.

The Hybrid penetration is really good on akali because akali's damage of Ap and Ad can get from damage.