ok I hate to do this so long after the game's release, but could I get another hint or something for the keypad puzzle? You said in another reply that there isn't a 0. So far I've tried the numbers to all the cars and a bunch of combinations based on the order the different species are listed in the terminal along with the order the characters appear on the train, given that the protagonist is called an Archein kin, the first guy you meet could be almost anything, and the second guy you meet says he's a Lynn and that he saw one two cars to the left (i.e. before the starting room)... but anything I guess for the first guy doesn't work and going right to left is also incorrect.
Am I missing something or just looking at this wrong?