Not Updated For Current Season
U need to not go in like the sh1t but stay back more and gank as much as possible, you should not go in a teamfight and atk first unless super fed. Stay back and be one of the last because they want u dead. So you should always signal tank to engage and go in 2nd to last or last outta ambush with ulti.
Always know your a assassin so pick off the low hp/ lone champs/ scouting if no oricle/wards. go in usually last as said and outta ambush for atk speed/ ulti on and atk/ after there going outta range use the slow. if thats not enough then use expunge and finish them off. If you want the kill guaranteed usually then hold explunge til there low enough for it to kill(note if u have a nuker then its harder :P. the boots should help u escape/harass/chase better, and i go with berserker cause i like more atk speed then boots of mobility like other people, i get zeal early on casue i need extra speed then to bloodthirstier for lifesteal.
Pros / Cons
All out to get you
Kinda slow early game
Your gonna have to stay back esp if other team is smart on it. stay back when they got oricle harass and signal to gank the oricle user. very important. You go in last cause if you go in first they will kill u in a sec unless you are super fed".
farming is kinda not that good til u get bloodthirstier just use ambush while ur getting to the jungle monster and atk each monster/ w/e 6 times and explunge like the 2 golems is a good example for it working great.