Giant Bomb: "Upon completing Shadow Complex--a task that took me close to five hours--the first thing I did was reload my final save so I could go back and collect all of the items I missed. Three hours later, I had cleared the game with 100 percent of the items collected. With that out of the way, I started over on a harder difficulty setting. That's the nature of Chair Entertainment's side-scrolling action-adventure. There's enough to it to probably satisfy people who only like to complete single-player games once, but it's set up in a way that really inspires you to play it again and again."