For the filling: Heat the oil in a deep skillet over medium heat. Add the onions, and saute until golden, 2 to 3 minutes. Add the meat, tomato paste, cumin, coriander, paprika and cloves. Stir well to mix. Season with the salt. Reduce the flame to medium-low. Cook for 15 minutes.
Meanwhile, heat the tortillas on a grill. Wrap them in a towel to keep them warm.
To serve, bring the tortillas, guacamole, salsa, cheese and meat filling to the table, and serve them family style.
Alternatively, wrap the tortillas in foil. Heat them in a 350 degree F oven for 5 to 7 minutes.