Chop shrimp into bite-sized pieces (see notes if you want to quick cook shrimp first).
In a large bowl, combine tequila, lime juice, red onion, and serrano chili. Stir shrimp into mixture and place in the fridge for about an hour.
Remove bowl from fridge and stir in cucumber, tomato, avocado, and cilantro.
Serve ceviche with chile dusted tortilla chips.