Ninja Noob wrote: Dabilharo is good against the "red dinosaurs" (are they called "fiends"? I thought any monster in the game was "a fiend"). I didn't find a good use for the Flails other than fight fishes, but I'm sure I'm wrong because people says they are amazing, probably I should watch video walkthroughs (I actually wathced, but just the first chapters). Also, a "witch boss witch weapon" list would be much appreciated.
Weapon really depends on the boss, though in a lot of cases if you find a good opening / recovery time to exploit after one of the boss' attacks, any weapon can do the trick.
The Dabilahro's XXXXY and XXXXXY combos are really strong. For enemies like the Red Dinos and Ogres (big green troll-looking things with the staffs, that can turn red and enraged ifyou break their mask), this combo is really nice. The UF with low health will also really demolish them.
For the worm mini-bosses, the Dabilahro UT is pretty much perfect.
The ->Y move from the Dabi is also really good.
The Flails are kinda similar to the Dragon Sword moveset but a little faster and a little less reach. They're really good for fighting the smaller, nimble imp fiends and human enemies. (BTW all the monsters in NG, pretty much, are called fiends. The ones that can talk / have intelligence are Greater Fiends.) The -> YYY combo, especially if you equip the Armlet of Potency, is very strong. Recommended against Doku after he misses his sword dash.
In NG2 they lack power against bosses and non-delimbable enemies, but on anything else they're awesome. Very very fast and high delimb rate on almost all of its animations.