Hitting a monster with a two-handed weapon has a 5% chance to shatter its wielded weapon.
|Weapon Name||Cost||Weight||Prob (‰)||Damage (S/L)||Material||Appearance||Tile||Glyph|
|battle-axe||40 zm||120||10||d8+d4||d6+2d4||iron||double-headed axe||)|
|dwarvish mattock||50 zm||120||13†||d12||d8+2d6||iron||broad pick||)|
|two-handed sword||50 zm||150||22||d12||3d6||iron||)|
|tsurugi||500 zm||60||N/A||d16||d8+2d6||metal||long samurai sword||)|
|unicorn horn||100 zm||20||tool||d12||d12||bone||(|
Monsters (including pets) can wield two-handed weapons if they have the strong attribute and are not wearing a shield, in addition to the usual restrictions (must have a weapon attack, no cross-aligned artifacts etc).
Wielding cursed two-handers
Two-handed weapons are infamous for their crippling effect when wielding a cursed one. (Wielding a cursed weapon while wearing a cursed shield has similar drawbacks.) While your hands are welded to a cursed two-hander, you cannot loot or apply containers, cast spells, change your cloak, body armor, or shirt, wear or remove rings, and several other activities. Your god treats this as a major trouble for prayer purposes.
These handicaps make it hard to lift the curse, since your uncursing items will usually be safely in your bag. But you can empty your bag on the floor with the tip command to reach your curse removal items. That's quite annoying if you didn't prepare in advance a second bag with just what you needed. Praying is the most convenient solution, but keep in mind that you can't successfully pray in Gehennom. Some people also drop holy water on the ground in places you can easily branchport or level teleport to.
Slashem doesn't have the tip command. So wielding a cursed two handed weapon is a much more serious problem. You most likely want to avoid two handed weapons here.