added boss (final commit)

Assets/Code/UI/GameplayControllerFirst.cs

@@ -7,7 +7,6 @@ using UnityEngine;
 using UnityEngine.SceneManagement;
 using UnityEngine.UI;
 using DG.Tweening;
-using Unity.VisualScripting;
 
 namespace Code.UI
 {
@@ -45,7 +44,9 @@ namespace Code.UI
             deathScreen.rectTransform.DOScale(1f, 0.3f)
                 .SetEase(Ease.OutBack);
 
-            deathText.color = deathText.color.WithAlpha(0f);
+            var color = deathText.color;
+            color.a = 0;
+            deathText.color = color;
             deathText.DOFade(1f, 0.6f)
                 .OnComplete(() =>
                 {