I'm mainly talking here about any named characters we know that died in the episode. I was trying to pay attention to see who died but it was so damn dark that I probably missed who and when. Those that I can remember seeing are:
Edd, Lyanna Mormont, Jorah (possibly), Rhaegal (possibly) and Melisandre.
I think there were others and I can't remember if some did die or not.
Who died in Season 8 Episode 3, "The Long Night"?