Hints for Quest for the Sword of Justice

So, has anyone been able to complete this? I’m totally stuck. What I found out:

I can find a shield, hat and cloth armour lying around in town.

I can grab the Sword of Justice, and survive the court proceedings without being declared guilty (if I haven’t picked up the other items). But then Necroth has already destroyed world.

If you end up in jail, you’re stuck – the author has confirmed this to me.

I don’t know how to get a sword, so any help with that would be appreciated.