For the record the build featured isn't accurate as we finished the game way before i was able to get all of it.
So me and my friends played a draft russian roulette style (all fill) and i had the pleasure of playing jungle. I picked Rengar cause i wanted to try him with galeforce and decided that if we won i'd write a guide on it so here it is. I'd like to start by increasing my character counter to 3000 otherwise this build won't get featured and my friends won't be able to like it. In order to do that I'll tell you how my game went, here it goes:

Started doing my blue(no idea if that's where Rengar starts) cleared my bot side jungle then went top, as i was clearing krugs my top dies but he says Irelia is low so i go there. I manage to make an amazing outplay (by mediocre standards) and kill her, then narrowly escape death as Ekko tries to pursue me but my minion jumping mechanics are no match for his point and click E.
Also at this time my bot boys start hard inting and suprisingly lethality Cait mid picks up her second kill. I clear my jungle some more then gank bot and manage to kill their support while my support kills some other guy that was there can't rly remember if it was the adc or jungler, rly cool for us anyway.
Also my top wants me to mention that Irelia was a chicken for taking vampiric first item.
I pick up an early drake and a Herald and use it on mid to dive Akali.

I finally pick up my beloved Galeforce and i start massacring the enemy team, whenever they are low and alone that is.
Day 69(haha it's the funny number) My bot is still hard inting but it doesn't matter cause for some reason Cait just spawned 11 kills in her KDA.
I farm my jungle some more, get one shot by Lux and get some kills thanks to my beloved Galeforce. I gank Irelia and kill her, Ekko is waiting for me in the top brush but my guy Ornn was there to help me and i kill him as well.
I pick up a second Herald and use it on top to get their inhib tower.
Not much else happening here Cait just getting more fed and bot is inting less now that Cait can defend them.

Short chapter tbh we were kinda stomping them at this point.
Day 420 (haha other funny number) Cait is apparently one shotting people with her E now, that's cool. I'm getting pretty stronk and with the help of my beloved Galeforce pick up some more kills here and there.
We hard stomp them in bot where i find out that i can kill an Ekko with two basic attacks, and a fed Lux with a Q, suck it Lux, you broken *** champion, after which they shamefully surrender.

Tbh we got carried by that Cait that wasn't even premade with us, pretty cool guy.
Lux is still a nasty champion and needs to get hard nerfed asap.
If you enjoy this build then oh boy do i have another one planned, it's gonna be called Codrinel's Qiyana with an inting botlane guide, rly cool comeback story on that one, might do it if this gets 1 like that isn't from my friends.