I like the idea of making the darkness suddenly come to the players, as they may not be prepared. I also like that there's a hook for an unrelated adventure in the nature of how the eclipse occurred. It seems like there's a lot to do with this adventure, not forcing anything too hard to handle as it ramps up. I will say that the choice of layouts made it feel a bit 'wall-o'-text to me however.
Overall, this has the feel of the supposed panic from the 'War of the Worlds' broadcast with everyone acting crazy and the otherworldly beings playing silly (and sometimes deadly) games. A nice little stack of ideas for adding to a game, though probably not suited for 'extremely serious' game tables where the playful nature might not fit well.