It's almost impossible to climb bronze as a jungler.
With my adventures in bronze, i have figured out after 200 games that it is hard as hell to climb as a jungler. Often times i will play a game where i get each of my laners 3 kills each and still lose. I dont know about you, but this tilts the fuck out of me. When i'm tilted, i cant win games, period. So for all the people saying "Play amumu, hes really good in bronze" You're wrong. The actual answer is that unless you're going to play a hard carry jungler, you're team isn't going to have the slightest idea what to do when you engage and use your ult. Most of the time playing carry junglers doesnt work either, you'll just kill one or two people and then die in a teamfight leaving you're teammates to run around like a flock of chickens being attacked by foxes. As a jungle main, i am now completely convinced that you cannot win games unless unless your team has at least some idea of what they're doing. In bronze, common sense and logic are almost extinct.
Also works.
jungle.
top and getting 500 stacks by 25 minutes, or
and killing over extended ADCs. Its easy.