In heavy-duty dry skillet over medium-high heat, toast chili peppers until darkened, flipping once, about 1 minute per side. Transfer chilies to bowl, cover with warm water, and soak for 30 minutes. Take chilies out of bowl and slice off stems, reserving soaking water.
In blender container, place drained chili peppers, 1/4 cup soaking water, tomatoes, beer, garlic, almonds, sesame seeds, raisins, oregano, salt, cinnamon, and allspice. Blend until smooth.
Transfer sauce to saucepan and bring to a gentle simmer. Stir in chocolate until melted. Add tempeh and heat over low for 10 minutes, stirring frequently.
To assemble tacos, place tempeh mole on tortillas and top with avocado, onion, cheese, and cilantro. Squirt on lime juice.