That sounds like the Valas Warhammer or the Merkyls Lair Warhammer (BTW the + 13 is only against outsiders)
The two best long swords are found in the proving grounds (+10), There is a awsome shortsword there as well. a + 9 bleeding Kukri can be found on Level 8.
The best Greataxe can be found at the end of the proving grounds.
The best quarterstaff (for a fighter) can be found on Level 11 & level 12.
Hope that helps!
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