I fell like this could be a really fun game with some tweaking. To start with having progressively hard words would be good instead of just a random dictionary. Sometimes I started with "hug" and other times I started with "undesirable". There was also some oddness going on with the box colliders which killed me way to easily sometimes, and missed letters completely other times. One play through I got half way through the word and the word changed which killed me.
All of these are little bugs that could be ironed out though and take an already fun game to being a really great game.