Loading Multiple Levels

Questions & Answers
1

I really tried hard to figure it out on my own before asking this question but no success.
I want to load new level after my int variable increases certain amount.
It worked with two levels but because of new scene (Level) load everything gets destroyed.
I made new empty object with my Script attached to it and DontDestroyOnLoad which should do the trick but now I have different problem with The name `enemy’ does not exist in the current context

I have my variable attached to
enemy Script:

public int Hits = 1;

Then my increasement at Projectile script:

void OnTriggerEnter(Collider otherObject)

{
	if (otherObject	.tag == "enemy")
	{
		Enemy enemy = (Enemy)otherObject.gameObject.GetComponent("Enemy");
		enemy.Hits += 1;
    }
}

And lastly my empty object NewLevel has its own script:

using UnityEngine;
using System.Collections;

public class NewLevel : MonoBehaviour

{

void Update () 

{
	Enemy enemy = (Enemy)otherObject.gameObject.GetComponent("Enemy");
		
	if (enemy.Hits == 2) Application.LoadLevel (4);
	else if (enemy.Hits == 3) Application.LoadLevel (5);
	else if (enemy.Hits == 4) Application.LoadLevel (6);
	}

}

I understand that my error is somewhere at NewLevel but I can’t figure it out.
I also tried switch instead of if statements.

Thank you for any advice.

2

In the second script,otherObject is null.