question...

At the dark dungeon it says : acquire DARK sword and Power stones upon defeating final boss... can i actually get the DARK sword?

If power stones you can get it there, but Dark sword hmm... who knows, maybe you're the first one to get it. I do not know anyone who actually got one (drop) but you can try.

I think its possible but rare.First u should be in frozen castle of death which itself is rare.Then u should be inferno or maybe dark mode.Then only u can get dark sword and don't forget that dark sword is a unique item and chances of its drop are same as that of any other unique item.

Inferno also drops in the dark dungeon ... Inferno set may be gathered first.

sr

I think its possible but rare.First u should be in frozen castle of death which itself is rare.Then ...

I have yet to see someone who have actually got dark sword in there. There is one time (more than a year or 2) a player claimed he got one but had no evidence to prove it. So I dismissed it. The shop is the fastest way possible upon all the post in the forum.

あきる/AkiRu

Inferno also drops in the dark dungeon ... Inferno set may be gathered first.

Yes that is true. Inferno also drops in dark dungeon as I actually saw a friend of mine got it there. The thing is, you can get inferno sword in dark mode and its true. Don't know other swords though but it's possible