Adds a new class evolution for Bulwark, the Juggernaut.

As a Juggernaut, the Bulwark gains the ability to equip shields in the off hand and main hand simultaneously and Weapons Mastery will apply to shields.

While equipped with two shields:

- You may use Rush while sustaining Last Stand.
- When you use Rush, you will instantly trigger Repulsion, ignoring and negating cooldown.
- For 1 turn after using Rush, you will reduce all incoming non-Mind damage by 50% of your Block value.