You are doing this on story difficulty you said, correct?I explained it twice why I think its annoying...you like the timers because it adds something for you,to me its the opposite...and I tried this with at least 30 people so far and failed...it also takes forever to get a party going,probably because no one wants to redo that mission once they did it once...you have no time to clear all the ennemies before the timers expire,multiple times.We did some bounties on challenging and some other missions on hard and never had a huge problem like in this mission,except for maybe the Roosevelt fuel tanks part.
Thanks for the tips though,I will keep trying ;)
Like, sorry, I can't even fathom how you can not beat the encounter. If your build is even slightly properly made you should be able to literally run around in the open and punch enemies to death on story difficulty.
I am really, 100% baffled.