Doesn’t feel bullets

I yelled, and the River Styx exploded. A black tidal wave smashed into the legionnaires. Spears and shields flew everywhere. Roman zombies began to dissolve, smoke coming off their bronze helmets.
The redcoats lowered their bayonets, but I didn't wait for them. I charged.
It was the stupidest thing I've ever done. A hundred muskets fired at me, point blank. All of them missed. I crashed into their line and started hacking with Riptide. Bayonets jabbed. Swords slashed. Guns reloaded and fired. Nothing touched me.
I whirled through the ranks, slashing redcoats to dust, one after the other. My mind went on autopilot: stab, dodge, cut, deflect, roll. Riptide was no longer a sword. It was an arc of pure destruction.
I broke through the enemy line and leaped into the black chariot. Hades raised his staff. A bolt of dark energy shot toward me, but I deflected it off my blade and slammed into him. The god and I both tumbled out of the chariot.
The next thing I knew, my knee was planted on Hades's chest. I was holding the collar of his royal robes in one fist, and the tip of my sword was poised right over his face.
Silence. The army did nothing to defend their master. I glanced back and realized why. There was nothing left of them but weapons in the sand and piles of smoking, empty uniforms. I had destroyed them all.
Hades swallowed. "Now, Jackson, listen here. . . ."
He was immortal. There was no way I could kill him, but gods can be wounded. I knew that firsthand, and I figured a sword in the face wouldn't feel too good.
"Just because I'm a nice person," I snarled, "I'll let you go. But first, tell me about that trap!"
Hades melted into nothing, leaving me holding empty black robes.
I cursed and got to my feet, breathing heavily. Now that the danger was over, I realized how tired I was. Every muscle in my body ached. I looked down at my clothes. They were slashed to pieces and lull of bullet holes, but I was fine. Not a mark on me.
Nico's mouth hung open. "You just . . . with a sword . . . you just — "

I think the river thing worked," I said.

TLO ch. 8