In a fry pan or skillet, fry the Mexican chorizo on low for a few minutes to warm it up, then set aside.
Slice the purple shallot/onion and long chillies, wash and remove the fresh coriander (cilantro) leaves from the stems, and quarter and de-seed the limes.
Slice the avocado in half, remove the pit, scoop out and mash the avocado flesh, squeeze a quarter of lime juice into the avocado to prevent browning, season with salt, combine well, taste, and adjust salt to your taste.
Heat the soft flour or corn tortillas over a dry skillet then transfer them to a plate covered with a clean cotton tea towel to keep them warm.
Scramble the eggs until they are just done, then assemble your tacos: divide the scrambled eggs, chorizo and avocado between the tacos; garnish with the purple shallots/onion, crumbly cheese, chillies, and coriander leaves; and serve with additional lime quarters, garnishes and hot sauces.