Heat the oil in a skillet over medium heat. Add ½ of the onion and cook down for 2 minutes. Pour in the beef crumbles, dry seasonings and chipotles. Cook for a couple of minutes - you want the beef crumbles to get a little char. Pour in ⅓ cup of water and lower the heat. Simmer for 10 minutes, stirring frequently.
Meanwhile, add the remaining onions to a bowl with ½ of the cilantro and the juice of 1 lime. Mix until combined and set aside.
Add the remaining lime juice & cilantro to the vegan beef, toss and taste. Adjust the seasonings as needed.
Heat the tortillas (over an open flame or in a skillet). To assemble, layer each tortilla with vegan beef crumbles, a spoonful of onions & cilantro and a dollop of guacamole. Serve with lime wedges on the side.
