You dont sadly

The way i cleared it was buy going brain, lungs then heart. Heart is the fastest to clear and brain is the longest. Use a high damage super on the brig and kill it as fast as possible. Have everyone near the door youre going through first to save time. Kill everything in past that door (shanks are infinite so they can be partially ignored) Number the panels 1 to 6 and have scanner quickly run past them (if they turn white on the radar they are correct if they dissapear they are wrong). Dunk both scanner and operator (scanner should be dunked as soon as you have the numbers). Kill all the ads on the way back with the highest damage leading to kill the brig fastest. Rinse and repeat. The final brig will be bigger and healthier than the rest have the nuke near the boxes while you fight it and save supers. It may take a few attempts.

Always have 3rd guy going into next area and clearing it out for the other 2. Took some practice but we got thru it with more than 30 seconds left.