I just completed the game a while ago. It ended in a most illogical way. Upon finding that he is an alien, Jack Walters kills himself because of this "horrifying" knowledge. What`s so bad about being an alien?

maybe...... maaaayyybbbbeeee........ i really dont know aliens are awezome and shouldnt this go in general discussion?

It has a pretty big spoiler in it (namely that Jack Walters is an Yithian). I don`t know about the Cthulhu section of the forum but in The Elder Scrolls section, such threads with spoilers are moved into "cheats, hints, and spoilers" section.