*Disclaimer* I am trait level 1000, so I do have the DLC traits active. While this will cause me to do more damage and be more efficient, these are still the most optimal ways to build without the DLC and are still extremely powerful.
Build:
Leto Helm & Chest, scrapper legs OR Full Leto's
Primary - Hunters mark
Secondary - Song of swords / corrosive aura
Butcher's Flail / Hard hitting melee weapon of choice
Butcher's fetish
Burden of the gambler
Leech ember
Build summary:
Become an unstoppable force, even without the DLC. With this build, you will be tanking hits and healing simultaneously. It's ridiculously powerful. The preferred melee weapon will be the butcher's flail as it's one of the highest damaging melee weapons in the game due to it's ability to provide corrosion. The 2 piece leto, 1 piece scrapper combo will provide more damage & allow you to heavy roll but will provide slightly less defense. Go full leto's in situations that require you to have more defense. If you want to use another melee weapon, don't forget to sub in corrosive aura over song of swords as well. Corrosion is a MUST. Burden of the gambler is one of the best damage rings in the game and it is THE best for melee weapons. Melee weapons have poor weakspot modifiers and it's quite hard to hit weakspots with melee weapons as well, so there really is no con to not using gambler when going full melee.
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