Rotate and more - Help

Hello! Im new here and with programming. I would like to know some stuff! - About 2D:

How to put Rotate when we walk in the Vertical (W,S keys) for the character to go up and down normally (see the back and front of it). I am wanting to make a game style like Zelda: The Hylures of Fantasy and The Adventure of Link.

My Script:

using UnityEngine; using System.Collections;

public class PlayerController : MonoBehaviour {

public float velocidade;

void Start () {

}

void Update () {

Movimentacao (); }

void Movimentacao() {

if (Input.GetAxisRaw ("Horizontal") > 0) { transform.Translate (Vector2.right velocidade Time.deltaTime); transform.eulerAngles = new Vector2 (0, 0); } else if (Input.GetAxisRaw ("Horizontal") < 0) { transform.Translate (Vector2.right velocidade Time.deltaTime); transform.eulerAngles = new Vector2 (0, 180); }

else if (Input.GetKey ("w")) { transform.Translate (Vector2.up velocidade Time.deltaTime); } else if (Input.GetKey ("s")) { transform.Translate (Vector2.down velocidade Time.deltaTime); } else if (Input.GetKey (KeyCode.UpArrow)) { transform.Translate (Vector2.up velocidade Time.deltaTime); } else if (Input.GetKey (KeyCode.DownArrow)) { transform.Translate (Vector2.down velocidade Time.deltaTime); } else if (Input.GetKey (KeyCode.LeftArrow)) { transform.Translate (Vector2.left velocidade Time.deltaTime); } else if (Input.GetKey (KeyCode.RightArrow)) { transform.Translate (Vector2.right velocidade Time.deltaTime); } } }

And to 3D:

I wonder how to add mouse movement (only the left button) in both directions, as there are some games like Perfect World. -> Hold the left mouse button and drag in both directions.

I wonder also how to make the character stop running when we press a key "X" (EX: "1" - Mouse button Right) making a camera become the first person in and rotate 360 degrees with mouse movement.

If anyone can help me, I will be grateful.