I managed to keep everyone alive first playthrough on ME2. Was well pleased with that. Had to play through the final level again, though, just because it's so awesome.
Just finished the ME2 section of my re-run after a (brief, as it turns out) pause to do Deus Ex MK. Doing it as renegade FemShep who for some reason couldn't romance Tali (is she only available to MaleShep), then horrified to lose three possibly four crew members during the suicide mission. All loyalty missions done, must have forgotten to talk to some of them prior to the finale.
Anyhow now starting into ME3, the main objective this time being to secure the Quarian/Geth peace accord.