When your shield depletes, knock back and stun nearby enemies for 1 second. Also deal 47 base damage.
Keep your shields low and your health high. Learn to stop worrying and love the storm. And bees. This works with any ranged weapon that's good at close range, has a small magazine size & a fast reload. I've had the best results with a Last Word. Change out Six Shooter for someone else if you prefer a different weapon perk. Also, swap out Fumble or Battle Beat for Sub Wafers if you prefer a more hands-on healing approach.