Two-Weapon/Dual-Weapon Fighting

Two-Weapon/Double-Weapon Fighting Tiers
 'I'm of the persuasion that two axes are better than one,' - Ser Herald Lochheart

 'But don't you have six of them?' - Lord Ryon Volmark

 'The more the merrier,' - Ser Herald Lochheart

-Known quote from Jaira Varletta

All players start at Tier 1, and may take feats to rise in tier, each tier only requires the previous tier to be allowed to be taken.

Also note that if you are not proficient in one of the following weapons, than you add both the penalties for lacking proficiencies and those from what tier of fighting you are at.

Both weapons are light weapons.
Tier 1: -4, -6

Tier 2: -2, -4

Tier 3: -1, -3

Tier 4: -0, -2

Tier 5: -0, -0

Primary hand weapon is a heavy one-handed weapon, the other is light.
Tier 1: -6, -10

Tier 2: -5, -8

Tier 3: -3, -6

Tier 4: -1, -4

Tier 5: -0, -2

Off-Hand weapon is a heavy one-handed weapon, the other is light.
Tier 1: -6, -14

Tier 2: -5, -11

Tier 3: -3, -8

Tier 4: -1, -6

Tier 5: -0, -4

Both weapons are heavy one-handed weapons.
Tier 1: -10, -16

Tier 2: -8, -13

Tier 3: -5, -10

Tier 4: -3, -7

Tier 5: -2, -5

Weapon is a Heavy Weapon.
Tier 1: -6, -8

Tier 2: -4, -6

Tier 3: -2, -4

Tier 4: -1, -3

Tier 5: -0, -2

Weapon is a Light Weapon.
Tier 1: -4, -6

Tier 2: -3, -5

Tier 3: -2, -4

Tier 4: -1, -2

Tier 5: -0, -0

* When dual-wielding two weapons that both fall under the tags of 'Finesse' and 'Heavy,' the off-hand weapon is considered light when determining what penalties you will take. In any other situation it is considered a heavy weapon.