Use the following trick to have all characters wear Dom's beard. Start a new game under the Insane difficulty setting. Remain close to Dom when the flashback begins. Note: Though you may need to walk away from him briefly to get him to move. If done correctly, he will say "Yo". Remain near Dom during the entire flashback. Note: You can still fight the Locust as long as your remain close to Dom. If done correctly, when the flashback ends everyone will have Dom's beard for the rest of the game.