Ok - for those still stuck on the revgloves mission: either you have to die or your partner does.
So if you have a high level, chose a partner with a much lower level than you and vice versa.
Jump to somewhere like Brooklyn in 1969, and choose a fight ( one with a blue gun - the green guys with purple skirts is a good one for it!)
If you are trying to die it might be better to do a fight on your own first to lower your health, then call your partner for the next fight.
Equip yourself with the lowest power gun and shoot at the guy with the highest health as little as possible and wait until one of you dies, then use the revgloves.
If your partner shoots all the aliens, just pick another fight right away call in a different partner (which is why it's better to have a few friends) and repeat.