Been putting off finishing this for a day or so now, simply because I really didn't won't it to end. Quite possibly my favorite video game experience since KOTOR. Everything really just clicked in this sequel, and it all came together to make an amazing game.
I did all the side missions, explored all planets, and obtained all upgrades, before heading into the suicide mission. The Last mission was extremely satisfying, and I enjoyed using the whole squad to take the Collectors base. Lost Thane though right off the bat, as he was shot down trying to shut a door. Bummed out about that, as it means no achievement for saving everyone. But I have a save file before entering the relay, so I should be able to retry it from the beginning. The giant Terminator thingy was immense, and felt like a proper final boss. I'm still buzzing from this game, and am gonna go ahead and jump back on ME1 to finish my renegade Shepherd to go through ME2 with.