Portal 2: Schrodinger's Catch Achievement Guide Posted on May 12, 2011 by erma Reply Geoff and Jack show you how to get the Schrodinger's Catch Achievement in Portal 2. To view this animated banner you need to have Flash Player 9 or newer installed and JavaScript enabled. BannerSnack is a professional, easy to use Flash & GIF creator application. Share this:FacebookTwitterTumblr