Divergent Likeness - If you’re dual-wielding two weapons of the same type, you’ll deal bonus damage. Dual-wield weapons of differing types, and your accuracy goes up.
Down, Not Out - In the first Borderlands, no action ability was able to be used when you were on the brink of death. If you have this bonus activated in Salvador’s skill tree, however, he can dual-wield in his final moments.
Overheat - No matter what gun you’re using, its rate of fire will continue to increase as long as you hold down the trigger.