I don't recognize most of the scenes. That's good :) Knowing where the game takes place and guessing who's who could be really interesting. And it seems the dev doesn't try to hide original game from general public - I hope he has many tricks up in his sleeve.
Yep, it should make for a fun playthrough even if you've played the original version of Downfall. I wonder if it'll have voice acting and if so, will it feature Jesse Gunn reprising the role of Joe.