Played through it for a couple hours and I think I managed to get all the endings and most of the 'dead ends'. I thought it was pretty entertaining overall. Lots of meta jokes throughout and even some replay easter eggs that aren't there on the first run. It does help that you can just fast forward when it sends you back to replay a section.
Is it the best Black Mirror episode? No. It is quite ambitious though and fairly seamless in its operation. Better than the other choose your own adventure shows I've watched on Netflix.
Best choice...
[Show spoiler]F uck Yeah