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After cuddling for a while with the zombie puppies you feel a need to move on.
However, there is a slight problem. In your way, at the end of the wagon you see a vaguely humanoid shape.
Moving closer, you see it's actually not only shaped like a human but it is a human, and he is staring right at you.
After returning the quite uncomfortable stare for a while, the man speaks.

Feel free to bump the station if you get off.
To avoid annoyance: One Level 4, 5 and 6 giveaway each beyond this point, two of which are unbundled to my knowledge.

Edit: Even more possible answers and hints added.

View attached image.