basically, playing as an assassin, you should be wandering even if you are assigned a lane. you don't have to win top lane; just keep it alive. jungler should be able to help. then try to set up ganks against someone better for akali... like the mid. don't neglect your lane however. try to last hit minions, its harder on akali than other top-lane champs, but you can still try. also remember if your turret does go down, it actually makes farming A LOT harder on the other team's top, as he is forced to overextend or leave the lane.