Whenever you use the attack action to attack while wielding two weapons, you can expend your martial focus as a swift action to deal additional damage with all attacks you make equal to the weapon damage die of your offhand weapon (if you possess multiple offhand weapons, you must select 1 to use with this talent) until the end of your turn. I don't know about Pathfinder, but 3.5 has the feat Oversized Two-weapon Fighting which gives you the penalties of wielding a light weapon in the off-hand, even if the weapon actually is a one-handed weapon. Also the -2/-2 is for wielding a light weapon in the off-hand, what you do with your main hand is irrelevant.

Pathfinder Two Weapon Fighting Build

Weapons are items used by character to make attacks.

Two Weapon Fighting. Usage: Passive Prerequisite: Dexterity 15 Description. Two Weapon Fighting reduces the to-hit penalty when using two weapons at the same time. The penalty for your primary hand lessens by 2 and the one for your off-hand lessens by 6, so it becomes -4 (main hand) / -4 (off-hand) (instead of -6/-10 without this feat). In 2-handed mode if the weapon has a Versatile property the new damage will override the base damage dice. ( Longsword, Battleaxe, Quarterstaff ) In off-hand mode the ability score modifier is not applied to the damage. It's also possible to enable the 'Two-weapon fighting style' to ignore the previous rule.

Melee Weapons[edit | edit source]

Weapon	Medium Base Damage	Large Base Damage	Small Base Damage	Critical	Damage type	Proficiency	Size	Traits	Weight	Cost
Dagger	1d4	?	1d3	19-20/x2	P	Simple	Light	-	1	1
Punching Dagger	1d4	?	?	20/x3	P	Simple	Light	-	1	?
Light Mace	1d4	?	?	20/x2	B	Simple	Light	-	4	?
Sickle	1d6	?	?	20/x2	S	Simple	Light	-	2	?
Club	1d6	?	?	20/x2	B	Simple	One-handed	-	3	1
Heavy Mace	1d8	?	1d6	20/x2	B	Simple	One-handed	-	6	3
Shortspear	1d6	?	?	20/x2	P	Simple	One-handed	-	3	?
Longspear	1d8	?	?	20/x3	P	Simple	Two-handed	6 ft range	9	?
Quarterstaff	1d6	?	1d4	20/x2	B	Simple	Two-handed	-	4	?
Spear	1d8	?	1d6	20/x3	P	Simple	Two-handed	-	6	1
Trident	1d8	?	1d6	20/x2	P	Simple	One-handed	-	4	4
Dart	1d4	?	1d3	20/x2	P	Simple	One-handed	20 ft range	0.5	1
Javelin	1d6	?	1d4	20/x2	P	Simple	One-handed	30 ft range	2	?
Sling	1d4	?	?	20/x5	B	Simple	One-handed	40 ft range	0.1	?
Light Hammer	1d4	?	?	20/x2	B	Martial	Light	-	2	?
Handaxe	1d6	?	?	20/x3	S	Martial	Light	-	3	?
Kukri	1d4	?	1d3	18-20/x2	S	Martial	Light	-	2	?
Light Pick	1d4	?	1d3	20/x4	P	Martial	Light	-	3	?
Shortsword	1d6	?	1d4	19-20/x2	S	Martial	Light	-	2	3
Battleaxe	1d8	?	?	20/x3	S	Martial	One-handed	-	6	?
Flail	1d8	?	?	20/x2	B	Martial	One-handed	-	?	?
Longsword	1d8	?	1d6	19-20/x2	S	Martial	One-handed	-	4	4
Heavy Pick	1d6	?	?	20/x4	P	Martial	One-handed	-	6	?
Rapier	1d6	?	1d4	18-20/x2	P	Martial	One-handed	-	2	5
Scimitar	1d6	?	1d4	18-20/x2	S	Martial	One-handed	-	4	?
Starknife	1d4	?	1d3	20/x3	P	Martial	One-handed	-	3	24
Warhammer	1d8	?	?	20/x3	B	Martial	One-handed	-	?	?
Bardiche	1d10	?	?	19-20/x2	S	Martial	Two-handed	6 ft range	?	?
Earth Breaker	2d6	?	1d10	20/x3	B	Martial	Two-handed	-	14	10
Falchion	2d4	?	1d6	18-20/x2	S	Martial	Two-handed	-	8	19
Heavy Flail	1d10	?	?	19-20/x2	B	Martial	Two-handed	-	?	?
Glaive	1d10	?	1d8	20/x3	S	Martial	Two-handed	6 ft range	10	2
Greataxe	1d12	?	1d10	20/x3	S	Martial	Two-handed	-	12	18
Greatsword	2d6	?	?	19-20/x2	S	Martial	Two-Handed	-	8	12
Greatclub	1d10	?	?	20/x2	B	Simple	Two-handed	-	8	?
Scythe	2d4	?	1d6	20/x4	S	Martial	Two-handed	-	10	?
Kama	1d6	?	?	20/x2	S	Exotic	Light	-	2	?

Offhand Dmg Two Weapon Fighting Pathfinder