Nice idea combining the two game modes! I really enjoyed the sprite art of the train and the plateaus floating by. The first textbox in the second part came and went so quickly that I sadly could'nt read it. The second part - where you have to go through the seven deliveries - feels a bit tedious and long, as it repeats the same assets in a (random ?) succession. The Music does create an effectively dreadful mood, though the the volume of the loud parts could maybe be turned down just a notch (if the music is on full power for too long, it becomes a bit exhausting).
That said, once I got the hang of it and what the game wanted me to do, it became a quite almost meditative experience. Nice work, if a little drown out, but nice work nonetheless! Didn't reach the end yet (despite trying multiple times) but will come back to it :)