This build is meant for entirely for snowballing hard. If you can't get a lot of kills this build will be ineffective.

Start rocks and be sure to get 3 stacks of ferocity before killing the little one so you can get a double q immediately after using bola on red. Then go red, scuttle, birds, etc.

Avoid dueling tanks or anyone that can outburst you. If you can't blow your load and kill them and you can't out damage them after blowing your load, don't try to duel them.

When deciding which skin to use for Rengar, you need to first ask yourself about who you want to look like as a player. The classic skin is for scrubs. That being said, if your opponent sees that you are using the basic skin, they may underestimate your abilities. Headhunter Rengar is for the elite Rengar players. Only the OG Rengar players use the Headhunter skin. Night Hunter Rengar is for all the try-hard Rengar players. If you just want to win, you use Night Hunter. Finally, SSW Rengar is for the kids that think they're LCS. If you're a bronze II pleb and think you should be in challenger, you're probably gonna end up using this skin. Or maybe you're like me and you just think the white knife looks cool. Regardless, skins are just for looks but they say a lot about the kind of player you might be. Just keep that in mind when you pick your skin.