This is really great vs 1 or 2 enemys when they are market by 1st abiliti u have really easy to defeat them. When they are 2 exhaist 1st kill 2nd and that first have after this not chance :D . U must be hidden somewhere and suprice them and after it they not have chance (they dont have to have magic ressist 200 :D ) . Ignite use when they will run u and u not have ulti or 1st abiliti and u not wanna to they run to u . but care u are really strong when u have ulti, after ulti gain u are STRONG. Care akali is paper ( small point of hp and ressists ) dont go to team fights first wait and after it focus 1 champ, u are damager not tan (CARE ON BLITZCRANK) his 1st abiliti is really strrong on u. your 2nd abiliti is on running and suprice, when u run this abiliti can be really tactic. Akali is champ for who I know to play my better score was 35-6-20 or ( if u like not deads :D ) 22-0-2 AND NOT WS bots .
Abilites: 1ST "mark of the assasin" Abiliti - this abiliti is really strong with ulti beceuse this abiliti deal damage when u throw knife to him and when u hit him , this abiliti have small cd then u can every 4 seconds throw it to enemy, on first blood is this abiliti good beceuse it deal biggerst dmg and it have range thats good on fb.energy is good beceuse if will akali have mana u will must buying items to mana and u will must recall every 5 minutes .
2ND Abiliti "twilight shroud" - this abilti is good on three thinks 1. suprice : u can hide there and after it kill him ( mark of assasin - shadow dance - basic attack ) 2. runing : when u must run use this abiliti under u or near some bush and after it run through some bush or trought enemy minion by shadow dance 3. slowing - easy, when u wanna to kill enemy and he runing away and u not have or not have ready ulti
3RD Abiliti "crescent slash" - use it to minions good minion killing abiliti vs camp use it after mark, ulti, attack if he still live use this abiliti and mark :D
4TH Abiliti "shadow dance" (ulti) - this ulti is good to enemys who wanna run away or running when u have ulti u are stronk ( but u not must to feed enemy ) shadow dance is good in combination with mark of assasin .

akali
+ strong on fight 1v1
best assasin
good chance to escape
good DMG
invisibiliti
when she suprice enemy have small chance
+- stealing abilites (i dont know where this can be :D)
- low HP
hard to play for her
in team fightes less usable
small resists

when u have Hextech gunblade u can shoting enemys in shroud andhe dont have chance to run :)

Enjoy playing League Of Legends and play seriously LoL is good game and players who only telling "NOOB" are not good :(
Good Luck and Play for fun