How do I make a wall disappear when an objective is complete,How do I make a wall disappear when an objective is complete (ex. Player completes objective KillallEnemies, wall disappears)

Just have a reference from the player to the wall:

//in the player's script

public GameObject wallToDestroy;

private bool hasKilledAllEnemies;

void Update() { if (hasKilledAllEnemies == true) { wallToDestroy.Destroy(); {

}

//in the wall's script

public void Destroy() { Destroy(gameObject); }

There might be some errors in this example but you get the idea. Trigger a function in the wall script from the player script. If there's nothing you need from the player script then just check if the objective is completed in the wall script and destroy the object. I'm not sure if this answers your question since i don't know how you detect if the objective is completed but i hope this helps.

Edit: the enters and spaces don't seem ro work (for me at least) i hope you can read it