Veteran
17-20% Movement Speed for 2s on Weapon Special Activation.
Hitting at least 3 enemies with an attack, increases your damage by 24-36% for 3 seconds.
70-100% Critical Weak Spot Damage.
Point blank shots cause an explosion. Explosion Radius increases by 10-25%.
This is my duelist gunslinger build. It's really good against picking off specialist and elite enemies at range. The chainsword speed boosts help you get in and out quicker, as I like to explore the map a bit to find loot. The build prioritizes having a lot of shields (toughness), and being able to quickly eliminate most opponents in a few shots. It's not the best for crowd clearing, but the explosive rounds up close can help with that. Basically it requires you to be a ranged sniper and stay not far away from the group. It's not perfect, and I'm going at it kind of blind, seeing how it fits my playstyle.