I absolutely adore this game's presentation! The art style is gorgeous, particularly in regards to the menu and the UI, but also the 3d models! The music is also phenomenal, despite the occasional audio glitch (the main menu theme doesn't loop properly).
However, this game is sorely lacking in the challenge department. The ninjas all have predictable AI, they are extremely noticeable, and there are only three of them (one of which consistently gets stuck on a tree)! Outside of the times where I intentionally ignored the ninjas in order to admire the scenery, I found it impossible to lose.
With all that said, I would love to see this game developed further. Turn the ninjas into a genuine threat, one with multiple ways of sneaking around you. Provide an actual gameplay reason to explore the environment, maybe by giving the player multiple points to defend? This game has immense potential, and that potential deserves to be fulfilled.