A Deadly Joke Achievement

[Placek]

I am unable to get this one. I have an Observation Report, even killed Ursula but Assis doesn't comment on that. Just selling usual boss weapons. Is it supposed to be done after some part later or it's bugged currently?

[Acroh]

Seems to be bugged. can't get it either.

[Necroz]

try killing the doc, i think it worked for me normally but maybe it has something to do with it

[UnlimitedNC]

Need to exchange enough weapons with him.

[Placek]

Originally posted by UnlimitedNC:

Need to exchange enough weapons with him.

It was indeed this. After buying most things and resetting the location it worked.

[WiggleFin McBubbles]

Originally posted by UnlimitedNC:

Need to exchange enough weapons with him.

+1

[Valenth]

Originally posted by UnlimitedNC:

Need to exchange enough weapons with him.

In case someone face this issue and find this post - you don't even need to buy weapons, just sell him something (e.g. mechanical parts), one at a time, rest at branch, then repeat. Did this today, it works. Looks like questline bounds to overall interactions count, not only nucleus exchange count.

P.S. One can try to bulk sell goods, 10-20, maybe it's enough to sell once a big chunk and rest on branch.