Heat oil in a stock pot or Dutch oven over medium high heat. Brown the venison in the hot oil. Add onion, cover pot and simmer over medium heat for 10 minutes, or until onions are translucent.
Stir the mixed vegetables, tomatoes and potatoes. Combine the water, sugar and bouillon, stir into the soup. Season with salt, pepper, garlic powder and hot pepper sauce. Cover and simmer for at least one hour, or until the meat is tender.