Into the Burning Wastes
This optional rule might be cinematic … but it is balanced enough to use in a realistic campaign. The GM has the final say.
If you have at least two hands, you can strike with two hands at once using an Attack maneuver instead of an All-Out Attack (Double) maneuver. Each hand can attack unarmed, with a one-handed melee weapon,or with a pistol. Of course, if your ST is high enough, you can wield a two-handed weapon in one hand!
Each attack is at -4 to hit, but you can learn the Dual-Weapon Attack technique (p.230) to reduce this penalty. You have an extra -4 (total -8) with your “off” hand, unless you have Ambidexterity (p.39) or learn Off-Hand Weapon Training (p.232). Roll to hit separately for each hand. You can attack one target or two – but to strike two foes with melee attacks, they must be adjacent. If you aim both attacks at a single opponent, he defends at -1 against them, as his attention is divided! If you already have multiple attacks – for instance, from an Extra Attack (p.53) – you may “trade” only one of these for a Dual-Weapon Attack. All your remaining attacks must be simple, single-weapon attacks.
In the case of Kreen, it is common to use a pole-arm in the superior arms and to attack with a kind of throwing dagger called “chatkcha” in their inferior limbs. This allows Kreen to attack at reach will still having weapons to parry an attacker who maneuvers past the strike range of their “gythka”. A Kreen can also use their “chatkcha” to strike another opponent at range as those in close quarters fall. For this reason many Kreen carry four or more “chatkcha” at any time – hand crafting each with the knowledge that their clutch may depend on these ancestral weapons.