Fixed #1968.

app/models/CocoModel.coffee

@@ -353,10 +353,10 @@ class CocoModel extends Backbone.Model
   @pollAchievements: ->
 
     CocoCollection = require 'collections/CocoCollection'
-    Achievement = require 'models/Achievement'
+    EarnedAchievement = require 'models/EarnedAchievement'
 
     class NewAchievementCollection extends CocoCollection
-      model: Achievement
+      model: EarnedAchievement
       initialize: (me = require('core/auth').me) ->
         @url = "/db/user/#{me.id}/achievements?notified=false"
 

app/views/core/RootView.coffee

@@ -38,10 +38,12 @@ module.exports = class RootView extends CocoView
   showNewAchievement: (achievement, earnedAchievement) ->
     return if achievement.get('collection') is 'level.sessions'
     return if @isIE()  # Some bugs in IE right now, TODO fix soon!
-    popup = new AchievementPopup achievement: achievement, earnedAchievement: earnedAchievement
+    new AchievementPopup achievement: achievement, earnedAchievement: earnedAchievement
 
   handleNewAchievements: (e) ->
     _.each e.earnedAchievements.models, (earnedAchievement) =>
+      earnedAchievement.set('notified', true)
+      earnedAchievement.patch()
       achievement = new Achievement(_id: earnedAchievement.get('achievement'))
       achievement.fetch
         success: (achievement) => @showNewAchievement?(achievement, earnedAchievement)

server/achievements/earned_achievement_handler.coffee

@@ -10,11 +10,13 @@ util = require '../../app/core/utils'
 
 class EarnedAchievementHandler extends Handler
   modelClass: EarnedAchievement
+  
+  editableProperties: ['notified']
 
   # Don't allow POSTs or anything yet
   hasAccess: (req) ->
     return false unless req.user
-    req.method in ['GET', 'POST'] # or req.user.isAdmin()
+    req.method in ['GET', 'POST', 'PUT'] # or req.user.isAdmin()
 
   get: (req, res) ->
     return @getByAchievementIDs(req, res) if req.query.view is 'get-by-achievement-ids'

server/users/user_handler.coffee

@@ -318,9 +318,6 @@ UserHandler = class UserHandler extends Handler
       EarnedAchievement.find(query).sort(changed: -1).exec (err, documents) =>
         return @sendDatabaseError(res, err) if err?
         cleandocs = (@formatEntity(req, doc) for doc in documents)
-        for doc in documents  # TODO Ruben Maybe move this logic elsewhere
-          doc.set('notified', true)
-          doc.save()
         @sendSuccess(res, cleandocs)
 
   getRecentlyPlayed: (req, res, userID) ->