Heat a large skillet over medium heat. Add olive oil.
Once the oil is hot, add red onion, red bell pepper, mushrooms and ½ tsp. salt. Cook until veggies are soft, about 5-6 minutes.
Add minced garlic and continue cooking until fragrant, about 30 seconds.
Drain venison juices in the trash can to remove potential “gamey” flavor.
Add ground venison to the skillet, breaking the meat apart with a wooden spatula as it cooks. Continue cooking until venison is browned.
Add chili powder, cumin, paprika and remaining ½ tsp. salt. Stir in with meat and veggies. Cook for 1-2 minutes.
Stir in orange juice, lime juice and white vinegar.
Add ½ cup water to the pan. Reduce heat to medium-low and continue cooking until most of the water has evaporated, about 5-8 minutes.
While the water evaporates, cover tortillas with a wet paper towel and microwave for 30 seconds (or warm them in the oven).
Place ¼ cup venison and veggie mixture inside the tortilla, top with optional jalapeños, avocados, cilantro and a small dollop of reduced fat sour cream or plain Greek yogurt. Enjoy!