Stupid oneshots in DoS1 ruined whole ironman experience for me. Like digging that grave inside city that just wiped my party without any warning. I hate oneshots crap in RPGs.
I just finished Act 1 in DoS2 and I did encounter one instadeath where that crucified zombie on poll zaps you for 9999 if you get close.
I hope in DoS3 devs remove ANY oneshot mechanics so that people could play ironmode with first playthrough