unity bad scripting

void Start()
    {
        Cursor.lockState = CursorLockMode.Locked;
        Head = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 Head");
        Neck = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck");


        RightUpperHand = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 R Clavicle/Bip01 R UpperArm");
        RightForearm = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 R Clavicle/Bip01 R UpperArm/Bip01 R Forearm");
        RightHand = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 R Clavicle/Bip01 R UpperArm/Bip01 R Forearm/Bip01 R Hand");

         LeftUpperHand = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 L Clavicle/Bip01 L UpperArm");
         LeftForearm = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 L Clavicle/Bip01 L UpperArm/Bip01 L Forearm");
         LeftHand = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 L Clavicle/Bip01 L UpperArm/Bip01 L Forearm/Bip01 L Hand");

        weapon = transform.Find ("Bip01/Bip01 Pelvis/Bip01 Spine/Bip01 Spine1/Bip01 Neck/Bip01 R Clavicle/Bip01 R UpperArm/Bip01 R Forearm/Bip01 R Hand/pistol_glock");

        GetComponent<Animation>()["stand_pistol"].AddMixingTransform(LeftUpperHand);
        GetComponent<Animation>()["stand_pistol"].AddMixingTransform(RightUpperHand);
        GetComponent<Animation>()["stand_pistol"].layer = 10;
        GetComponent<Animation>()["stand_pistol"].enabled = true;
        GetComponent<Animation>()["stand_pistol"].weight = 1.0f;
        GetComponent<Animation>()["stand_pistol"].wrapMode = WrapMode.ClampForever;
        GetComponent<Animation>()["reload_pistol"].AddMixingTransform(LeftUpperHand);
        GetComponent<Animation>()["reload_pistol"].AddMixingTransform(RightUpperHand);
        GetComponent<Animation>()["reload_pistol"].layer = 10;
        GetComponent<Animation>()["reload_pistol"].weight = 1.0f;
        GetComponent<Animation>()["reload_pistol"].speed = 0.25f;
        GetComponent<Animation>()["pda_pistol"].AddMixingTransform(LeftUpperHand);
        GetComponent<Animation>()["pda_pistol"].AddMixingTransform(RightUpperHand);
        GetComponent<Animation>()["pda_pistol"].layer = 10;
        GetComponent<Animation>()["pda_pistol"].weight = 1.0f;
        GetComponent<Animation>()["pda_pistol"].speed = 0.25f;
    }

    void Update()
    {

        if (Input.GetKey(KeyCode.W))
        {
            if (Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift))
            {
                GetComponent<Animation>()["walk_forward"].speed = 2.5f;
            }
            else
            {
                GetComponent<Animation>()["walk_forward"].speed = 1.5f;
            }

            if (!GetComponent<Animation>().IsPlaying("walk_forward"))
            {
                GetComponent<Animation>().CrossFade("walk_forward");
            }

        }
        else if (Input.GetKey(KeyCode.A))
        {
            if (!GetComponent<Animation>().IsPlaying("walk_left"))
            {
                GetComponent<Animation>().CrossFade("walk_left");
            }

        }
        else if (Input.GetKey(KeyCode.D))
        {
            if (!GetComponent<Animation>().IsPlaying("walk_right"))
            {
                GetComponent<Animation>().CrossFade("walk_right");
            }

        }
        else if (Input.GetKey(KeyCode.S))
        {
            GetComponent<Animation>()["walk_forward"].speed = -1.5f;
            if (!GetComponent<Animation>().IsPlaying("walk_forward"))
            {
                GetComponent<Animation>().CrossFade("walk_forward");
            }

        }

        if ((reload)&&(!GetComponent<Animation>().IsPlaying("reload_pistol")))
        {
            reload = false;
        }
        if ((!reload)&&(!pda))
        {
            GetComponent<Animation>().Play("stand_pistol");
            if (Input.GetKey(KeyCode.R))
            {
                reload = true;
                GetComponent<Animation>().Play("reload_pistol");
            }
            if (Input.GetKey(KeyCode.F))
            {
                pda = true;
                GetComponent<Animation>().Play("pda_pistol");
            }
        }

        if ((pda) && (!GetComponent<Animation>().IsPlaying("pda_pistol")))
        {
            pda = false;
        }
        if (((Input.GetKey(KeyCode.F))) && (GetComponent<Animation>()["pda_pistol"].normalizedTime > 0.45f))
        {
            GetComponent<Animation>()["pda_pistol"].normalizedTime = 0.46f;
        }


    }