The Weaponmaster is is a walking arsenal with a different weapon for every situation. They focus on training with many weapons and combat styles with adaptability in mind as opposed to having a single focus.

Weapon Versatility

Beginning when you choose this archetype at 3rd level, you gain several bonuses due to your training. You can use weapons in ways many may find unconventional, allowing you to use Strength for attack and damage with bows and finesse weapons.

Additionally, you gain every fighting style you don't already have, but with the following changes. These changes are applied even to those chosen before selecting this path.

Defense

While you are equipped with a shield, you gain a +1 bonus to AC. 

Dueling

When you are wielding a melee weapon in one hand and have a free hand, you gain a +2 bonus to damage rolls with that weapon.

Arsenal of Blades

At 7th level, you can easily swap between weapons, and when doing so, the additional momentum gives you a bonus to attack.

When rolling for initiative or when surprised, you may immediately, as a free action, draw any number of weapons you can hold. As your item interaction every round, you may also exchange your currently equipped weapons for any others on you that are easy to grab.

When swapping weapons that would change the Fighting Style you're currently using, you gain advantage on your next attack roll. You may only benefit from this bonus once per round.

Versatile Action Surge

At 10th level, when you use your Action Surge, you may immediately, as a free action, exchange your weapons, even if you're already used your free action item interaction this round. When doing so, you may benefit from the advantage supplied by Arsenal of Blades again, this turn.

Drawing Momentum

Starting at 15th level, when benefiting from the advantage provided by Arsenal of Blades, that attack deals 1d6 extra damage.

Deadly Momentum

At 18th level, the damage bonus from Increased Momentum increases to 1d8 and can cause critical damage on a 19-20. When dealing critical damage with that attack, you deal an additional die of damage.