Fang

To activate Alpha Fang with Sandra don't have sex with Fang or Sandra for three or more days. Sandra will sneak out to have some fun with Fang giving you the player the option to join in or watch. Watch this time and the wait for three more days. When you receive the second scene between the two join in. It does not matter what position you take in the encounter. After that wait for about ten turns and then fuck Fang at the bottom of the list there will be a option to have a threesome with Sandra choose that option four times until it gives the option to let Fang dominate you and there you go Alpha Fang Activated.