Akali in ARAM
Akali is 134/140 in wr in ARAM at about 39%. Which is awful. It is because there are so many champs that stop her from popping off. I love Akali and I love the challenge of playing her in a mode where 3/5 enemy champs counter you. It makes me better. Dark Harvest is clearly the way to go. I run DH most of the time in normal game on her, and in ARAM, DH is busted. Akali can easily one shot carries if left unchecked.
Is the build i usually use. Just try to survive and snipe a kill or two early to get going!
Q-R-basic-E-Q-R-basic-E with W whenever it's needed is her combo for the most part. Just make sure you get your basic attacks in for the Lich Bane + DH + Akali passive + Akali Q procs. On basic after a Q can one shot a carry if it is a passive, DH, and Lich proc. Which is pretty hard to setup in ARAM.
GLHF