Wow. It's a "challenge" no doubt but I completed all 3 with only a few wipes per run. I mean dude why is this forum complaint worthy? Buck up and get it done. Try a different strategy or tweak which classes you have in the fireteam. I don't get this attitude of "I hit a challenge and must complain about it". This is where the obligatory "git gud" comment goes but I think you know how you've come off now with this whiny post.