In your folder should be a game executable and a game file (configuration settings). When you update to a new version, you need to replace the new version's file with the old one to keep your achievements and gallery information. I recommend either making a spare copy of both or sending one to the Recycle Bin instead of replacing directly, in case you confuse yourself and accidentally lose everything. Gallery mode can be accessed at the Oriental Commerce (blue house above Inn). If the Fortune Teller is sucking dick in the toilet, knock on the door until she comes out.