--Use your mutators (Makes life easier)
-Use a map that you can establish a base and that you only have to fight a 1 front war. Meaning having a wall at your back side.
--Share your money with your teammates to get better upgrades
--Have tons of patients. You will die a lot. Especially if you face a Lambent Zerker.
--If there's a Boomshield on the map or one near you, use it!
Things that get annoying:
-1 Boltok Shot can down you.
-Tickers damage your fortifications from ridiculous distances
-Grinders down you with 3 bullets
-You die a lot!