Bro, you sound really pissed. Chill lmao. First of all, if you can't make stealth, then what was shown in the video? A list of what you used? Because it looked like some good stealth, and how where the enemies placed? Was it using map editor? Also, it sounds possible as there is already a mod that makes stealth called "The Stealth" just some edits or refinements to the file would be good enough. Restricted areas should be possible using map editor. So, will THAT be possible?