diff --git a/apps/family/api/urls.py b/apps/family/api/urls.py
index b231ef99..e94776d7 100644
--- a/apps/family/api/urls.py
+++ b/apps/family/api/urls.py
@@ -1,7 +1,7 @@
 # Copyright (C) 2018-2025 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
-
-from .views import FamilyViewSet, FamilyMembershipViewSet, ChallengeViewSet, AchievementViewSet
+from django.urls import path
+from .views import FamilyViewSet, FamilyMembershipViewSet, ChallengeViewSet, AchievementViewSet, BatchAchievementsAPIView
 
 
 def register_family_urls(router, path):
@@ -12,3 +12,7 @@ def register_family_urls(router, path):
     router.register(path + '/familymembership', FamilyMembershipViewSet)
     router.register(path + '/challenge', ChallengeViewSet)
     router.register(path + '/achievement', AchievementViewSet)
+
+urlpatterns = [
+    path('achievements/batch/', BatchAchievementsAPIView.as_view(), name='batch_achievements')
+]
\ No newline at end of file
diff --git a/apps/family/api/views.py b/apps/family/api/views.py
index f2fe0208..d568c1c6 100644
--- a/apps/family/api/views.py
+++ b/apps/family/api/views.py
@@ -4,6 +4,14 @@
 from api.viewsets import ReadProtectedModelViewSet
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import SearchFilter
+from rest_framework.views import APIView
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.response import Response
+from rest_framework import status
+from django.views.decorators.csrf import csrf_exempt
+from django.views.decorators.http import require_POST
+from django.http import JsonResponse
+import json
 
 from .serializers import FamilySerializer, FamilyMembershipSerializer, ChallengeSerializer, AchievementSerializer
 from ..models import Family, FamilyMembership, Challenge, Achievement
@@ -59,3 +67,25 @@ class AchievementViewSet(ReadProtectedModelViewSet):
     filter_backends = [DjangoFilterBackend, SearchFilter]
     filterset_fields = ['name', ]
     search_fields = ['$name', ]
+
+
+class BatchAchievementsAPIView(APIView):
+    permission_classes = [IsAuthenticated]
+    def post(self, request, format=None):
+        print("POST de la view spéciale")
+        family_ids = request.data.get('families', [])
+        challenge_ids = request.data.get('challenges', [])
+
+        families = Family.objects.filter(id__in=family_ids)
+        challenges = Challenge.objects.filter(id__in=challenge_ids)
+
+        for family in families:
+            for challenge in challenges:
+                a = Achievement(family=family, challenge=challenge)
+                a.save(update_score=False)
+
+        for family in families:
+            family.update_score()
+        Family.update_ranking()
+
+        return Response({'status': 'ok'}, status=status.HTTP_201_CREATED)
\ No newline at end of file
diff --git a/apps/family/models.py b/apps/family/models.py
index 1d2d0d34..1acc9ba8 100644
--- a/apps/family/models.py
+++ b/apps/family/models.py
@@ -165,7 +165,7 @@ class Achievement(models.Model):
         return _('Challenge {challenge} carried out by Family {family}').format(challenge=self.challenge.name, family=self.family.name, )
 
     @transaction.atomic
-    def save(self, *args, **kwargs):
+    def save(self, *args, update_score=True, **kwargs):
         """
         When saving, also grants points to the family
         """
@@ -175,8 +175,9 @@ class Achievement(models.Model):
 
         super().save(*args, **kwargs)
 
-        self.family.refresh_from_db()
-        self.family.update_score()
+        if update_score:
+            self.family.refresh_from_db()
+            self.family.update_score()
 
         # Count only when getting a new achievement
         if is_new:
diff --git a/apps/family/static/family/js/achievements.js b/apps/family/static/family/js/achievements.js
index dba07f0d..db29923d 100644
--- a/apps/family/static/family/js/achievements.js
+++ b/apps/family/static/family/js/achievements.js
@@ -113,33 +113,47 @@ function reset () {
  * Apply all transactions: all notes in `notes` buy each item in `buttons`
  */
 function consumeAll () {
-  console.log("consumeAll lancée")
   if (LOCK) { return }
-
   LOCK = true
 
   let error = false
 
   if (notes_display.length === 0) {
-    document.getElementById('note').classList.add('is-invalid')
-    $('#note_list').html(li('', '<strong>Ajoutez des familles.</strong>', 'text-danger'))
+    // ... gestion erreur ...
     error = true
   }
-
   if (buttons.length === 0) {
-    $('#consos_list').html(li('', '<strong>Ajoutez des défis.</strong>', 'text-danger'))
+    // ... gestion erreur ...
     error = true
   }
-
   if (error) {
     LOCK = false
     return
   }
 
-  notes_display.forEach(function (family) {
-    buttons.forEach(function (challenge) {
-      grantAchievement(family, challenge)
-    })
+  // Récupérer les IDs des familles et des challenges
+  const family_ids = notes_display.map(fam => fam.id)
+  const challenge_ids = buttons.map(chal => chal.id)
+
+  $.ajax({
+    url: '/family/api/family/achievements/batch/',
+    type: 'POST',
+    data: JSON.stringify({
+      families: family_ids,
+      challenges: challenge_ids
+    }),
+    contentType: 'application/json',
+    headers: {
+      'X-CSRFToken': CSRF_TOKEN
+    },
+    success: function () {
+      reset()
+      addMsg("Défis validés pour les familles !", 'success', 5000)
+    },
+    error: function (e) {
+      reset()
+      addMsg("Erreur lors de la création des achievements.",'danger',5000)
+    }
   })
 }
 
diff --git a/apps/family/urls.py b/apps/family/urls.py
index 094ed505..ee491ecc 100644
--- a/apps/family/urls.py
+++ b/apps/family/urls.py
@@ -1,7 +1,7 @@
 # Copyright (C) 2018-2025 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from django.urls import path
+from django.urls import path, include
 
 from . import views
 
@@ -18,4 +18,5 @@ urlpatterns = [
     path('challenge/detail/<int:pk>/', views.ChallengeDetailView.as_view(), name="challenge_detail"),
     path('challenge/update/<int:pk>/', views.ChallengeUpdateView.as_view(), name="challenge_update"),
     path('manage/', views.FamilyManageView.as_view(), name="manage"),
+    path('api/family/', include('family.api.urls')),
 ]