Dual-wield

Any character can use two weapons simultaneously. This is known as dual-wielding. This allows the character to gain additional attacks from a weapon in their off-hand at the cost of a penalty to her attack bonus. The penalties depend on a number of conditions.
==Dual-wielding==
If a characters wields a second weapon in her off hand, she can get one extra attacks per round|attack per round with that weapon. 
She suffers a –6 penalty with her regular attack or attacks with the primary hand and a –10 penalty to attacks with the off hand when fighting this way. Also, off-hand weapons only add half of the Strength modifier to damage roll; however, for Insightful Strike, the full Intelligence modifier applies to both weapons.
These penalties can be reduced in two ways:
*If the off-hand weapon is light weapon|light, the penalties are reduced by 2 each.
*The Two-Weapon Fighting feat lessens the primary hand penalty by 2, and the off-hand penalty by 6.
Circumstances 	Primaryhand	Off-hand
Normal penalties 	–6 	–10
Off-hand weapon is light 	–4 	–8
Two-Weapon Fighting feat 	–4 	–4
Off-hand weapon is light and Two-Weapon Fighting feat	–2 	–2
==Additional off-hand attacks==
Additional off-hand attacks may be gained by selecting further two weapon fighting feats. 
*Improved Two-Weapon Fighting provides an additional attack with a -5 penalty AB, for a total of 2 off-hand attacks.
*Greater Two-Weapon Fighting provides an additional attack with a -10 penalty AB, for a total of 3 off-hand attacks.
*Perfect Two-Weapon Fighting provides the same progression for off-hand attacks as the character's primary hand attacks.
==Other Modifiers==
*Monkey Grip allows the use of two handed weapons in one hand at a -2 penalty to AB. If using an oversize weapon in each hand, subtract 2 from each.
*Haste effect adds an extra attack to the main hand only. (game notice: if you have six attacks per round you will not get more attacks)
*Two-Weapon Defense gives a +1 shield bonus to AC when dual-wielding.
*Improved Two-Weapon Defense gives a +2 shield bonus to AC when dual-wielding.
*Whirlwind Attack ignores the off-hand weapon and behaves as if the character is single-wielding.
==Double weapons==
Double-Sided Weapons count as dual-wielded weapons but work slightly different in some way.
==Thrown weapons==
In NWN2, Thrown and Ranged Weapons CANNOT be dual wielded.
==Rangers==
Rangers who choose the two-weapon fighting combat style gain dual-wielding feats as they level, even if they do not meet the prerequisites. However these are only active if a ranger is wearing light or no armor.
*Ranger level 2: Two-Weapon Fighting
*Ranger level 6: Improved Two-Weapon Fighting
*Ranger level 11: Greater Two-Weapon Fighting
*Ranger level 21: Perfect Two-Weapon Fighting
==3.5E Rules Comparison==
Unarmed strike cannot be used as either the primary or off-hand attack in two-weapon fighting in NWN2.