Question: what is the most powerful weapon in dark souls?
Answer: 1 Black Knight Halberd. There really is no other choice for best weapon in Dark Souls.
2 Claymore. At first glance, the Claymore might not seem worth the effort. ... 
3 Zweihander. ... 
4 Black Knight Sword. ... 
5 Moonlight Greatsword. ... 
6 Estoc. ... 
7 Black Knight Greatsword. ... 
8 Balder Side Sword. ...