"No Lasers!" achievement
It works. I have it.
Try killing him with life leeching right at the start so he does not even start using lasers if everything else fails. Or solo it on the lowest possible scale.
1st person worldwide to reach 35,000 achievement points.
I got it even after party member got hit by a laser so I have no idea.
Hmm… Seems to be one of those wonky achievements then.
I’ll give it a try later soloing and then report back, thanks for the info.