Compliments! Really liked the atmosphere, how the story devleoped and how the train is shaking, I really got a 'train vibe'.
The sound is also awesome. How the sound changes when going outside, how the story developed, especially when I started walking through the train in the "second phase", it made me scared to move on. Really good!
I do feel however that the story is waaaay underdeveloped. I feel like the tasks at the beginning are not really contributing to the story. If they would, it would be even more engaging.
And, as said before, it's really short, this really does provide a good starting point for a far more elaborate story!