Offhand
Offhand is a term used in game to refer to any limb with a melee weapon that is not the * primary limb. Certain limbs default to a default melee weapon if not equipped with anything, such as hands defaulting to fists. On game start, the primary limb defaults to either the left or right hand, with the other becoming an offhand. Which limb is the primary limb can be set by moving the cursor over the limb on the equipment screen and pressing [Tab].
Classifications of limbs
The table below is to aid in describing what is considered an offhand and what is not:
| Limb type | Description | Base chance of attacking per turn | Affected by Offhand Strikes, Ambidexterity, Two-weapon Fighting | Jab eligible1 | Flurry eligible |
|---|---|---|---|---|---|
| Primary limb | Main limb used to attack. Can be selected on the equipment screen. | 100% | not applicable | not applicable | not applicable |
| Hardcoded organic limbs |  Horns,  fork-horned helms, and lower limbs from  Multiple Arms2.
|
Horns and fork-horned helms: 20% [1]
|
no | yes | yes |
| Hardcoded robotic limbs | Arms granted by  helping hands.
|
8% [3] | no | no [4] | yes |
| Offhand limbs | Every other limb that does not fall into the above categories. See the below section for more specifications. | 15% [5] | yes | yes | yes |
- This assumes that the limb is wielding a short blade
Beak and 
Hooks for Feet (D) would normally work this way as well, but they currently make no offhand attacks at all due to a bug.
Folk-horned helms count as organic because they are being "wielded" by the user's head. If the player obtains a metallic body, such as through 
Graftek, then Jab will never apply to their offhand attacks.
Additional methods of gaining offhands
Despite being called "offhands", any limb that can hold a melee weapon is able to become one.
- If the left or right hand no longer is a primary hand, it becomes an offhand.
- Extra hands (and hand variants) grown from
Chimera. - Mutated limbs from
stinger - Armor or modifications that make other body parts count as offhands:
folded carbide wristblade and any magnetized melee weapon will make the arm slot or the floating nearby slot respectively an offhand.
If the player uses the tab key to swap primary limbs, the old primary limb hands will swap attack percentage with the now new primary limb. For example, if the primary limb was swapped from the right hand to Horns, the right hand will now have the horns' 20% chance of attacking. This attack percentage is affected by Jab, but not by the Dual Wielding skill tree.