feat: last quest

Assets/Scripts/Quest/QuestManager.cs

@@ -41,12 +41,18 @@ public class QuestManager : MonoBehaviour
         ));
         questItems.Add(new QuestItem(
             "Earn 100 Scores",
-            new List<string> { "Earn 100 Scores" }, 
+            new List<string> { "Earn 100 Score" }, 
             QuestItem.QuestType.SCORE, 
             new List<float> { 100f }, 
             new List<MonsterType>()
         ));
-        // add last quest
+        questItems.Add(new QuestItem(
+            "Kill the Dragon",
+            new List<string> { "Kill 1 Soul Eater" },
+            QuestItem.QuestType.KILL,
+            new List<float> { 1f },
+            new List<MonsterType>()
+        ));
 
         nextQuest();
     }