Mash avocados, garlic, onion, and chilli together roughly in a bowl with a fork.
Stir in lime juice, season with salt and pepper, and set the guacamole aside.
Mix tomatoes, onion, and coriander in a separate bowl to create the salsa.
Heat oil in a pan and fry the onion for 2 minutes until softened.
Add steak pieces, garlic, and chilli to the pan and stir fry for 1 minute.
Add cayenne, Worcestershire sauce, and Tabasco, cooking for another minute before removing from heat.
Place warmed tortillas on plates, fill with steak, top with salsa and lettuce, and fold.
Serve burritos with rice, cheese, soured cream, and guacamole.