Hi,
you are right. It wasn't Pirate Captain. I thought that the pirate with feather on the helmet is the Captain but it is not.
We faced real Pirate Captain later on, on the two deck boat. It was fair fight 2:1 and we killed him - no big problem.
Regarding your suggestions to use magnetic armor: I have used one armor item with magnetic effect already and its behavior is far away from something reliable.
So result was as described - we have lost almost all of our weapons and tools that we used in panic
Anyway: thanks for clarification. We will just avoid this mob as not able to kill with our skill.
I'm glad to see that is not a bug and the generated world is ok.
Thank you.