I'm running level 5/6 mostly iron some scrap armor, with maxed out pain resistance and maxed out brawler.
Are there actually perks that reduce your chance of being critically injured? It seems like armor no longer does that, unless the critical chance reduction does that. Either way, it's clearly not enough, as I still sustain anywhere from 10-15 injuries playing pretty conservatively while partially inside a base setup on a horde night. That's why I'm saying that the playstyle is currently untenable with how punishing injuries are.
I'm mostly speaking for brawler, tho