Creating a videogame is not as easy as it seems, ask anyone who has tried. There is a plethora of moving parts that you have to keep tabs on.
the first thing that I like to have for each game is a playable character. As this game is a third person experience, you need a strong lead, and I have found mine in Wendy.
Building the character is never easy, though. There are allot of decisions that go into making this character, decisions that will have to carry through to the actual game. So attention must be paid.