A couple of days ago I’ve completed quite a big location in Yury. My current “speedrun” takes 6 mins 30 secs which is (according to previous tests) around 40 minutes of gameplay for an average-experienced gamer who plays it first time. Our original idea was to make a 1 hour game, so it seems we are more than half way through:)
However, I still have a bunch of ideas, so maybe it will be a bit longer in the end.