So In PB2 we have swords, capable of reflecting bullet shots. However, it does not reflect shots like rockets, rails, plasma.
So my idea is introducting a "Secondary Fire mode" for swords, the secondary fire for swords will not force your character to slice with swords, but it will generate a nano shield.
What does the Nano Shield capable off?
The Nano Shield is mainly built to reflect powerfull shots such as rails, rockets, and plasma, the Shield will not handle a income wave of streaming bullets, only single shot, not regarding to their power.
However, When activating Nano shield, it drains of your energy.
This is how the Nano-shield looks like:
Yes, i used MS Paint, I'm totaly Null terrible at art.