movement to certain child object

hi guys, I am attempting to replicate the controls of metroid prime (original gamecube version not MP trilogy version), I have the controls pretty much set up but when using the free aim controls when holding down the aim button it messes up the movement of my samus game object, because this is set to the root child it rotates the object, so when I start walking again it start ascending upwards, is there a way to change my script to send the movement to the camera child object.

here's the script

 var canaim : boolean = false;
 var canlock : boolean = false;
 var normalmove : boolean = true;
 var turn = 30;
 var walk = 30;
 var enemy : Transform;
 var camera : Transform;
 
 
 function FixedUpdate (){
 
 if (Input.GetButton("Aim")){
 canaim = true;
 normalmove = false;
 }
 
 if (Input.GetButtonUp("Aim")){
 canaim = false;
 normalmove = true;
 }
 
 if (Input.GetButton("Lock")){
 canlock = true;
 normalmove = false;
 }
 
 if (Input.GetButtonUp("Lock")){
 canlock = false;
 normalmove = true;
 }
 
 
 if (normalmove){
 
      if (Input.GetKey(KeyCode.D)){
        transform.Rotate(Vector3.up * turn * Time.deltaTime);
        
      }
        
      if (Input.GetKey(KeyCode.A)){
        transform.Rotate(-Vector3.up * turn * Time.deltaTime);
   
      }
 }
 
 if (Input.GetKey(KeyCode.W)){
     transform.Translate(Vector3.forward * walk * Time.deltaTime);
     }
 
        if (Input.GetKey(KeyCode.S)){
 
     transform.Translate(Vector3.back * walk * Time.deltaTime);
     }
 
 
     if(canlock){
           transform.LookAt(enemy);
           if (Input.GetKey(KeyCode.W)){
     transform.Translate(Vector3.forward * walk * Time.deltaTime);
     }
 
        if (Input.GetKey(KeyCode.S)){
 
     transform.Translate(Vector3.back * walk * Time.deltaTime);
     }
 
     if (Input.GetKey(KeyCode.A)){
         transform.Translate(Vector3.left * walk * Time.deltaTime);
 
     }
 
      if (Input.GetKey(KeyCode.D)){
         transform.Translate(Vector3.right * walk * Time.deltaTime);
 
     }
 
     }
 
     if (canaim){
      if (Input.GetKey(KeyCode.D)){
        transform.Rotate(Vector3.up * turn * Time.deltaTime);
        
      }
        
      if (Input.GetKey(KeyCode.A)){
        transform.Rotate(-Vector3.up * turn * Time.deltaTime);
   
      }
 
      if (Input.GetKey(KeyCode.W)){
      //modify this to rotate the camera child upwards
        transform.Rotate(Vector3.left * turn * Time.deltaTime);
        }
        //modify this to rotate the camera child downwards
        if (Input.GetKey(KeyCode.S)){
        transform.Rotate(Vector3.right * turn * Time.deltaTime);
      }
      }
 
 
 }