Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
High Health and a good nuke Akali. Possible carry depending on the replacement item(s) for Phantom Dancer. Guardian Angel would be recommended until they nerfed it. (FoN) Force of Nature is ideal to prevent high AP nukes (Ryze, Annie, Ect.). Really good for first blood and quick and simple ganking at level 6. Easy middle for Akali with this build to get early middle push unless of course your against Heimerdinger then you just wait till level 6 and use your ultimate to maintain a close distance and stay stealthed.