I have to say, I'm quite disappointed with this game since I was expecting a much better gaming experience.
Graphics are not the most important thing as usual, but a poor interface settings makes an easy game harder to operate. The uncomfortable controlling and moving (+shooting) delay also bothers me a lot. Moreover, weapons system, action of enemies and main character's ability are too monotonous to provide players enjoyment.
As a simple 2D action-adventure game, Humanity Asset lacks the refinded interface, operation fluency and complexity (Lasting Appeal) compared to most of similar games I played before. This is totally not a 9.99$ game should be like.
Sorry for the negative rating, but I'd really like to see how this game could be improved in the future.