Similar to what we did for the Water zone, we need to create an endpoint for our map. Once the player reaches the endpoint, the game will show a message (left as an exercise) and load the next level. Since the structure is so similar to the Water zone, here is the direct script, which should be self-explanatory:

using UnityEngine;
using UnityEngine.SceneManagement;
 
[RequireComponent(typeof(Collider2D))]
public class WinningZone : MonoBehaviour {
 
    [SerializeField]
    private float timeDelay = 1.0f;
 
    [SerializeField]
    private string nextLevelToLoad = "level2"; 
    //substitute with the next level to load. 
    Be sure it is included in the build settings.
 
    private IEnumerator loadNextLevel() {
        //Show a winning message (left as exercise)
 
        //Wait timeDelay
        yield return new WaitForSeconds(timeDelay);
 
        //Restart Scene
        SceneManager.LoadScene(nextLevelToLoad); 
       //load the level named as in the nextLevelToLoad variable.
    }
 
    private void OnTriggerEnter2D(Collider2D collision) {
        //If the player enters within the Water Zone, 
        then restart the scene
        if (collision.CompareTag("Player")) {
            StartCoroutine(loadNextLevel());
        }
    }
}