Board Thread:Episode Discussion/@comment-24993958-20170128134330/@comment-25936766-20170203052337

WC-83 wrote: @Sentry: You need to play them in sequence or you're screwed (though ME2 had an error where it didn't track all of ME1s progress, so the most important descisions from ME1 were choosable after the tutorial (regardless if that actually happened or not). Eh, no. The only important decision you can actually choose (at least, assuming you imported from ME1; never made a ME2 Shepard from scratch) is whether Anderson or Udina is Humanity's Ambassador.

And that was only because the game's last save was actually....either right before fighting that Turian guy, or right after beating him, but in either case before you choose the Ambassador at the end.