2D Top down player won't move down

Here is the script I’m using I don’t know why but he will not move down … Up,Left and Right are no issue but down is apparently impossible I even tried (-Vector2.up * speed) still won’t move down … any help ??

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour
{
public float speed;

// Use this for initialization
void Start()
{

}

// Update is called once per frame
void Update()
{

    if (Input.GetKey(KeyCode.D))
    {
        transform.Translate(Vector2.right * speed);
    }
    if (Input.GetKey(KeyCode.A))
    {
        transform.Translate(Vector2.left * speed);
    }
    if (Input.GetKey(KeyCode.W))
    { 
        transform.Translate(Vector2.up * speed);

     if (Input.GetKey(KeyCode.S))
     {
            transform.Translate(Vector2.down * speed);
        }
    
    }
}

}

It seems you boxed in your down IF Statement with your up. Delete your second to last curly brace and move it up after your transform.Translate( Vector2.up * speed );

Hahaha omg what a fail that was exactly what I did ahahaha thanks so much and I will keep that in mind … still learning how to properly script so that should help thanks a bunch!!