var totalArmor = 0;
foreach(var item in equippedItems) // equippedItems список одетых преметов
{
  totalArmor += item.ArmorValue;
}

var totalArmor = equippedItems.Sum(x => x.ArmorValue);

using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
using UnityEditor.SceneManagement;
#endif

public class Logo : MonoBehaviour {
    private float times = 5;

    void Update () {

   #if UNITY_EDITOR
     if( times > 0)
     {
       times -= Time.deltaTime;
     }
     if (times< 0){
       EditorSceneManager.LoadScene(1);
     }
   #endif
    }
}

public class PistolShoot : MonoBehaviour {

private Animator _anim;

void Start () {
_anim = GetComponent<Animator>();
}

void Update () {
if (Input.GetKeyDown (KeyCode.Mouse0)) {
_anim.Play("PistolShootAnim");
}
}
}