 Following this , Gordon returns to the Citadel , unwillingly aiding Freeman in his journey up the Citadel and influencing the plot of the game . As Freeman is pursuing Dr. Breen to his teleporter , Frohman is about to kill Freeman — but he pauses to come up with the perfect one @-@ liner for the occasion , causing him to run out of time ; Dr. Breen 's teleporter explodes and Frohman is flung off the Citadel peak by the explosion . Dr. Breen also survives , having fallen from the Citadel onto a pile of dead Combine soldiers . However , Frohman falls right onto Breen , killing him . Gordon himself is only seriously injured . Baffled by his ability to survive , he realizes through a flashback that he has been under " Buddha Mode " , a cheat code which prevents his health points from dropping below one throughout the comic 's duration . Frohman inadvertently turns off the mode , and even spoils an opportunity to be rescued by a group of Vortigaunts , as both Gordon Freeman and Alyx Vance are at the start of Episode One . In the end , Frohman dies unceremoniously , while survivors of the City 17 uprising find him dead . 
