0% chance without cheese. You need at least 3 people to open the initial door. You need 2 super skilled people for the confluxes You can solo the Oracles if you are skilled and have done vog enough times to recognize where the Oracle is and the sounds they make You need at least two people on the gate keeper. One required to run in the first portal to get the shield and one to keep the portal open. And one to grab the shield in the second portal and one to keep the portal open. Than you have atheon, impossible to solo without cheese or the warlock sunsinger cheese. So I would say your chances of soloing vog are slim to none.