I can't run and this game gives me a headache. The motions when you turn your head are excessive, so I would fix that a bit. In the last part when you run from the monster the trains are really short, like a bus. It looks a bit silly. Otherwise good concept!
The game uses motion blur or some sort of effect like that. It's not "excessive" at all. Either you have a motion sickness and need to see a specialist or something was wrong with your PC and the framerate gave the impression of what you've experienced.
As for the trains, they are not short, it's regular sized as its in the game. Again, you either have to see a specialist or read about the perspective of objects in motion.