My +1 long dagger is super effective. It's pretty surprising how many people think it is a puny weapon and run onto the end of it to get 1 shotted. 
The Espada Eslavona is even better. It still looks like a butter knife, but the stab is brutal and you can kill most enemys without helmet with just one stab to the face. And 25 cut are still enough to hurt the enemy with swings to the head.
