In a small bowl, toss the shredded cabbage with lime juice and a pinch of salt to create a quick, zesty slaw.
Heat a large non-stick skillet over medium-high heat and add the lean ground beef, breaking it apart with a spatula.
Season the beef evenly with chili powder, smoked paprika, ground cumin, garlic powder, sea salt, and black pepper.
Sauté the beef until it is thoroughly browned and cooked through, approximately 5 to 7 minutes.
While the beef is cooking, thinly slice the radishes, chop the fresh cilantro, and slice the avocado.
Warm the corn tortillas in a dry skillet or over a low open flame until they are soft and pliable.
Assemble the tacos by dividing the smoky beef between the tortillas and topping with the cabbage slaw, avocado, radishes, and cilantro.