The game is a love lettter to classic stealth games like Tenchu, Metal Gear Solid and the original Splinter Cell games, and some new gems like Dishonored andMark of the Ninja. The art style is heavily inspired by the beautiful Okami, Journey and Sly Cooper.
Path of Shadows was a student project meant as a work of "portfolio". You can know more about the original team here: http://www.thepathofshadows.com
Some of the original developers are now working on Aragami, the commercial successor to Path of Shadows. Check it out at: http://www.aragami-game.com
Just run the executable and read the instructions. Please check the included ReadMe!
Also, check out the F.A.Q. at the Official Website: http://thepathofshadows.com/faq/#adventure