How to create a detailed ragdoll?

I'm trying to make a toribash style game where bullets are fired at the player and he must move each separate joint and limb to dodge the oncoming bullets, but i've ran into some problems while creating the ragdoll. The model i'm using is a basic blockman who has no real textures or details, but his body is split into Right Shoulder, Right Elbow, Right hand, Left shoulder, left elbow, left hand, pelvis, chest, head, left hip, left knee, left foot, right hip, right knee, right foot.

Having more body parts than the actual ragdoll editor has caused a lot of problems. I can't add the other parts to the ragdoll and i'm unsure what the "Root" is, in the ragdoll editor. I'm pretty sure the problem is coming from having an upper body and lower body instead of just having one main body.

Does anyone know how i can attach all the parts together in a way that doesn't cause lag and make the ragdoll look like rayman?