In a non-stick pan, heat olive oil in heavy frying pan then add minced garlic and diced green chiles and sauté about 1 minute. Add cumin and taco seasoning and cook about 1 minute more.
Then add the ground beef and salt and cook over medium-high heat, breaking apart with the back of the turner as it cooks. Cook about 5 minutes, or until beef is starting to brown.
While beef cooks, chop green onions and set aside. Then wash cilantro, spin dry or dry with paper towels, and finely chop cilantro. Wash lettuce and shred lettuce.
When beef is lightly browned, add chopped green onions and cook about 2 minutes. Turn off heat, then stir in 1 cup chopped cilantro and 2 T lime juice.
Warm the tortillas on a dry skillet or in the microwave. Spoon 2 to 3 large spoonfuls of beef mixture into each piece of tortilla. Top meat mixture with salsa and avocado slices.