diff --git a/Assets/OneShotOneKill.txt b/Assets/OneShotOneKill.txt
index eccc536..7f0fa86 100644
--- a/Assets/OneShotOneKill.txt
+++ b/Assets/OneShotOneKill.txt
@@ -1,5 +1,3 @@
-타이머 적용
- - 시간 다 되면 패배
 승리 화면
 경험치 획득
 레벨 업 및 스킬 선택
diff --git a/Assets/Script/InGame/IngameMgr.cs b/Assets/Script/InGame/IngameMgr.cs
index 6489850..ef7e79c 100644
--- a/Assets/Script/InGame/IngameMgr.cs
+++ b/Assets/Script/InGame/IngameMgr.cs
@@ -22,6 +22,7 @@ public class IngameMgr : MonoBehaviourSingletonTemplate<IngameMgr>
     StageConfigTableData CurStageData;
     UnitTableData CurUnitData;
     Dictionary<string, List<MobActor>> mob_pools = new Dictionary<string, List<MobActor>>();
+    float f_Time;
 
     private void OnEnable()
     {
@@ -33,12 +34,18 @@ public class IngameMgr : MonoBehaviourSingletonTemplate<IngameMgr>
         m_HP = CurUnitData.n_DefaultHp;
         m_Lv = m_Wave = 1;
         m_Exp = m_Coin = m_Item = 0;
+        f_Time = 90f;
 
         Set_Texts();
 
         StartCoroutine(Co_MakeMob());
     }
 
+    private void Update()
+    {
+        Set_Timer();
+    }
+
     public void ReturnMob(MobActor mob)
     {
         mob.gameObject.SetActive(false);
@@ -54,6 +61,18 @@ public class IngameMgr : MonoBehaviourSingletonTemplate<IngameMgr>
         t_hp.text = m_HP.ToString();
         slider_exp.value = 0f;
     }
+    void Set_Timer()
+    {
+        if (f_Time > 0)
+        {
+            f_Time -= Time.deltaTime;
+            t_timer.text = DSUtil.Get_TimeText_MS(f_Time);
+            if(f_Time <= 0f)
+            {
+                GameUI.Ins.Set_UI(7);
+            }
+        }
+    }
 
     IEnumerator Co_MakeMob()
     {