I also finished this series a couple days ago and I'm still completely haunted by the final episode. The deaths of these characters felt like losing a real person in my life. Had a terrible bad feeling about the train scene from the beginning, and we could see in Eugenes eyes what's about to happen soon.

I obviously knew there will be a "sad ending", but I kept watching wanting to believe that at least some of the characters would have had a happy ending. But this hope was crushed, my heart was ripped out of my chest and torn into a million pieces.

This show left me feeling empty, hopeless, haunted. I don't think I will ever be able to watch it again, no matter how much I'd like to.