Hello - this game was challenging! I really enjoyed the moving obstacles namely the sawblade and the cyan fish. It gave you a real sense of danger as it was moving towards you! The sawblades on level3 though were pretty unforgiving. They just dropped down from the ceiling without any warnings and worse, they came back up from the floor so I got stuck there for a while. Overall it was pretty fun, Next time I would recommend making atleast some animation so everything is moving a bit at least, and also some sound effects. You can get them for free on for example jsfxr! Cool.