TheDrunkNinja said:
Everyone survived, I didn't need a guide. Let's see if I can remember...
Legion was the tech specialist in part one, Garrus the squad leader.
Samara was the biotic specialist, I had Miranda lead the team. Mordin lead the team back.
My party was Tali and Grunt through the whole thing.
I just looked up the wiki on the suicide mission, and it says that Mordin is the only ideal squad member to escort the rescued crew back, as it will ensure his survival. I'm under the impression that there are other ways though... It just wouldn't make sense.
If you leave Mordin or Tali in the last part with the rest of the people fending off the collectors, they will probably die. Mordin is more likely, if he isn't there then Tali. On my 1st playthrough I had Mordin on my party so he didn't die, but Tali stayed and died. I sent Garrus to escort the rest of the crew to the Normandy because I thought it could be dangerous. Turns out that anyone can go, basically, so for this playthrough I should have sent Tali to escort, then everyone would have stayed alive.
It's mostly easy to keep everyone alive, except for this last part.