How do I make this script include torso and legs? (first person script)

The only thing I can think of is adding more values to the script with torso etc and add all the parts in in then copy and change the part where it checks through the values. Personally I just check for all the parts in the character and modifies everything but the HumanoidRootPart but I don't know how you are thinking so yeah. Hope this helps

Got it working, for anyone interested: Local script in starter player>starter character scripts

local player = game.Players.LocalPlayer
local character = player.Character

local RightArmList = {'Right Arm', 'RightHand', 'RightLowerArm', 'RightUpperArm'}
local LeftArmList = {'Left Arm', 'LeftHand', 'LeftLowerArm', 'LeftUpperArm'}
local RightLegList = {'Right Leg', 'RightFoot', 'RightLowerLeg', 'RightUpperLeg'}
local LeftLegList = {'Left Leg', 'LeftFoot', 'LeftLowerLeg', 'LeftUpperLeg'}
local TorsoList = {'Torso','LowerTorso', 'UpperTorso'}

game:GetService("RunService").RenderStepped:connect(function()
    for _, v in pairs(character:GetChildren()) do
        --RIGHT ARM--
        for RA = 1, #RightArmList do
            if v.Name == RightArmList[RA] then
                v.LocalTransparencyModifier = 0
            end
        end

       --LEFT ARM--
        for RA = 1, #LeftArmList do
            if v.Name == LeftArmList[RA] then
                v.LocalTransparencyModifier = 0
            end
        end
        --RIGHT LEG--
        for RA = 1, #RightLegList do
            if v.Name == RightLegList[RA] then
                v.LocalTransparencyModifier = 0
            end
        end
        --LEFT LEG--
        for RA = 1, #LeftLegList do
            if v.Name == LeftLegList[RA] then
                v.LocalTransparencyModifier = 0
            end
        end
        --TORSO--
        for LA = 1, #TorsoList do
            if v.Name == TorsoList[LA] then
                v.LocalTransparencyModifier = 0
            end
        end
    end
end)