Hi ! I'm z1zou from EuNe and i decided to create a full guide of Rumble I have over 800 games with Rumble so ... I know what I'm saying here :D

Pro !
- Huge Dmg early game
- Can isolate any enemy from farm
- Strong AA
- Score double kill until lvl 6

Cons !
- Squishy
- Got 3 deaths until level 6
- Engages when he should retreat
- Having a bad cs score

Well in early game all you should do is to farm with your E because Rumble is not so strong untill he reaches lvl 4 . Keep in your mind that you have to farm and stay defense not to get killed until lvl 4 .
Rumble after lvl 4 becomes a monster if he have over 50 % his passive , try to keep is over 50% and if someone tryes to atack you go all in try to reach 100 % so you can AA him with your Q on !

Now you should have like 2-3 kills or more , it's time to roam !
Go bot and take 2 kills , or you can feed your adc a bit if they are doing badly
Try to farm , push your lane all the time and roam !
If you are underlever over your enemy top/mid lane , stay on lane and kills creeps and ask your jungler to help you a bit !

In late game ... you will deal tons of dmg but also your R is the most dangerous skill for them so try to positionate it in that way they will take as much dmg .
you may kill the adc with your R if he sits on it !