The demo includes only one chapter. Vertigo was created by Valve and map fixing by H-Grunt.
Demo includes-preached models-little amount of bugs-does not require hl2 beta source code-and more! Vertigo was not made by me. Valve made the map. The mod is currently in progress. Gordon crashed into a skyscraper and his commanders-rebels-tell him to go to the ground. You try to find a way(believe me,its a maze.). Get to Ground and you win!