There should be a second playable character, like stephano or something. Your ability should be the brofist, which dameges enemys. The main bad guy should be Edgar, who got possesed by the slender man.
In the begining, Gabe created Steam, and it was good. One day, Gabe said "LET THERE BE HALF LIFE!", and there was. We rejoiced. Then, Gabe said "LET THERE BE HALF LIFE 2!", and there was. There was much rejoicing. For many years, gamers have asked the eternal question: where is half life 3? One day, Shrek came before us and said that we must be patient and let Gaben, who is Shreks son, work. We must wait, because if we rush him, we will NEVER see half life 3.