Where is Jimmy Jenkins?
Can someone help me out with all misc challenges? I'm having trouble particularly with the Jenkins achievement.
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There is a way to farm Jimmy Jenkins, if you are on a certain mission.
I've read this guide myself recently, and can't find a source now :-( I guess if you're past this mission, you'll have to wait till TVHM, and if you're past that in TVHM, farm with another character. Remember, challenge is awarded to the player who deals the killing blow.
Jenkins also spawns normally in certain containers (ammo crates, lockers and I forgot the third) in only a few areas - again, I only remember Opportunity, and people seem to recommend it. But the chance to find Jimmy "normally" is very low, so do that only if you have no friends and have already completed TVHM :-)