So here I am, walking around the dungeon... I just got done selling Brax a bunch of stuff and decided to go through the door to the south of his shop. It was one of those rooms with a weapon rack surrounded by a bunch of traps. I walk in, paying no mind to the monsters as they carelessly galavant through the room, triggering said traps as if their lives depended on it. I slaughter the monsters left and right and gather up the traps. Things are going fine up to the point of Brax slamming his mighty ham fist into my face, killing me in a single blow. Curious as to what had just happened, I restart. Turns out there was a gargoyle arrow trap placed rather inconveniently behind Brax's shiny bald head. Talk about luck, huh?
Restart? It seems you're not playing to the true Roguelike nature of Permadeath.(As in you're playing with it off) I don't think there was anyway you could've avoided it unless you disarm the gargoyle trap before the monsters get to it. Usually you'll hear a music change if Brax is after you. Best thing to do then is to head straight for the next staircase and don't look back. Once you get to a much higher Character level(17+), you can try to kill all 3 Brax's before the Dredd Collectors kill you. If you kill all 3 Brax's in all 3 shops, the Dredd Collectors will stop spawning and everything in every shop on that floor is now absolutely free.