diff --git a/build/bundle.js b/build/bundle.js
index 04bba5fc..931e0cb1 100644
--- a/build/bundle.js
+++ b/build/bundle.js
@@ -15603,7 +15603,8 @@ LevelArbiter.prototype.validateLevel = function(level) {
 
   var optionalFields = [
     'hint',
-    'disabledMap'
+    'disabledMap',
+    'startTree'
   ];
 
   _.each(requiredFields, function(field) {
@@ -16499,6 +16500,7 @@ var Q = require('q');
 
 var util = require('../util');
 var Main = require('../app');
+var Errors = require('../util/errors');
 
 var Visualization = require('../visuals/visualization').Visualization;
 var ParseWaterfall = require('../level/parseWaterfall').ParseWaterfall;
@@ -16526,11 +16528,9 @@ var parse = util.genParseCommand(regexMap, 'processLevelBuilderCommand');
 var LevelBuilder = Level.extend({
   initialize: function(options) {
     options = options || {};
+    options.level = options.level || {};
 
-    this.options = options;
-    this.level = {};
-
-    this.level.startDialog = {
+    options.level.startDialog = {
       childViews: [{
         type: 'ModalAlert',
         options: {
@@ -16539,10 +16539,10 @@ var LevelBuilder = Level.extend({
             '',
             'Here are the main steps:',
             '',
-            '  * Define the starting tree',
-            '  * Enter the series of git commands that compose of the (optimal) solution',
-            '  * Define the goal tree, which also defines the solution',
-            '  * Enter the command ```finish building``` to specify start dialogs and such'
+            '  * Define the starting tree with ```define start```',
+            '  * Enter the series of git commands that compose the (optimal) solution',
+            '  * Define the goal tree with ```define goal```. Defining the goal also defines the solution',
+            '  * Enter the command ```finish``` to output your level JSON!'
           ]
         }
       }]
@@ -16709,13 +16709,20 @@ var LevelBuilder = Level.extend({
   },
 
   finish: function(command, deferred) {
-    if (!this.level.id) {
-      this.setID();
+    if (!this.gitCommandsIssued.length) {
+      command.set('error', new Errors.GitError({
+        msg: 'Your solution is empty!'
+      }));
+      deferred.resolve();
+      return;
     }
+
     if (this.level.hint === undefined) {
       this.setHint();
     }
-    console.log(this.level, this.startTree);
+    console.log(this.level);
+
+    command.finishWith(deferred);
   },
 
   processLevelBuilderCommand: function(command, deferred) {
@@ -19313,7 +19320,8 @@ LevelArbiter.prototype.validateLevel = function(level) {
 
   var optionalFields = [
     'hint',
-    'disabledMap'
+    'disabledMap',
+    'startTree'
   ];
 
   _.each(requiredFields, function(field) {
@@ -19373,6 +19381,7 @@ var Q = require('q');
 
 var util = require('../util');
 var Main = require('../app');
+var Errors = require('../util/errors');
 
 var Visualization = require('../visuals/visualization').Visualization;
 var ParseWaterfall = require('../level/parseWaterfall').ParseWaterfall;
@@ -19400,11 +19409,9 @@ var parse = util.genParseCommand(regexMap, 'processLevelBuilderCommand');
 var LevelBuilder = Level.extend({
   initialize: function(options) {
     options = options || {};
+    options.level = options.level || {};
 
-    this.options = options;
-    this.level = {};
-
-    this.level.startDialog = {
+    options.level.startDialog = {
       childViews: [{
         type: 'ModalAlert',
         options: {
@@ -19413,10 +19420,10 @@ var LevelBuilder = Level.extend({
             '',
             'Here are the main steps:',
             '',
-            '  * Define the starting tree',
-            '  * Enter the series of git commands that compose of the (optimal) solution',
-            '  * Define the goal tree, which also defines the solution',
-            '  * Enter the command ```finish building``` to specify start dialogs and such'
+            '  * Define the starting tree with ```define start```',
+            '  * Enter the series of git commands that compose the (optimal) solution',
+            '  * Define the goal tree with ```define goal```. Defining the goal also defines the solution',
+            '  * Enter the command ```finish``` to output your level JSON!'
           ]
         }
       }]
@@ -19583,13 +19590,20 @@ var LevelBuilder = Level.extend({
   },
 
   finish: function(command, deferred) {
-    if (!this.level.id) {
-      this.setID();
+    if (!this.gitCommandsIssued.length) {
+      command.set('error', new Errors.GitError({
+        msg: 'Your solution is empty!'
+      }));
+      deferred.resolve();
+      return;
     }
+
     if (this.level.hint === undefined) {
       this.setHint();
     }
-    console.log(this.level, this.startTree);
+    console.log(this.level);
+
+    command.finishWith(deferred);
   },
 
   processLevelBuilderCommand: function(command, deferred) {
diff --git a/src/js/level/arbiter.js b/src/js/level/arbiter.js
index 62178578..1d8155d4 100644
--- a/src/js/level/arbiter.js
+++ b/src/js/level/arbiter.js
@@ -32,8 +32,11 @@ LevelArbiter.prototype.init = function() {
       this.validateLevel(level);
       this.levelMap[level.id] = _.extend(
         {},
-        { index: index },
-        level
+        level,
+        {
+          index: index,
+          id: levelSequenceName + String(index)
+        }
       );
 
       // build up the chaining between levels
@@ -68,7 +71,6 @@ LevelArbiter.prototype.syncToStorage = function() {
 LevelArbiter.prototype.validateLevel = function(level) {
   level = level || {};
   var requiredFields = [
-    'id',
     'name',
     'goalTreeString',
     'solutionCommand'
diff --git a/src/js/level/builder.js b/src/js/level/builder.js
index c1cea2da..0ec76e6f 100644
--- a/src/js/level/builder.js
+++ b/src/js/level/builder.js
@@ -4,6 +4,7 @@ var Q = require('q');
 
 var util = require('../util');
 var Main = require('../app');
+var Errors = require('../util/errors');
 
 var Visualization = require('../visuals/visualization').Visualization;
 var ParseWaterfall = require('../level/parseWaterfall').ParseWaterfall;
@@ -23,6 +24,7 @@ var regexMap = {
   'define start': /^define start$/,
   'show start': /^show start$/,
   'hide start': /^hide start$/,
+  'define hint': /^define hint$/,
   'finish': /^finish$/
 };
 
@@ -31,11 +33,9 @@ var parse = util.genParseCommand(regexMap, 'processLevelBuilderCommand');
 var LevelBuilder = Level.extend({
   initialize: function(options) {
     options = options || {};
+    options.level = options.level || {};
 
-    this.options = options;
-    this.level = {};
-
-    this.level.startDialog = {
+    options.level.startDialog = {
       childViews: [{
         type: 'ModalAlert',
         options: {
@@ -44,10 +44,11 @@ var LevelBuilder = Level.extend({
             '',
             'Here are the main steps:',
             '',
-            '  * Define the starting tree',
-            '  * Enter the series of git commands that compose of the (optimal) solution',
-            '  * Define the goal tree, which also defines the solution',
-            '  * Enter the command ```finish building``` to specify start dialogs and such'
+            '  * Define the starting tree with ```define start```',
+            '  * Enter the series of git commands that compose the (optimal) solution',
+            '  * Define the goal tree with ```define goal```. Defining the goal also defines the solution',
+            '  * Optionally define a hint with ```define hint```',
+            '  * Enter the command ```finish``` to output your level JSON!'
           ]
         }
       }]
@@ -198,33 +199,20 @@ var LevelBuilder = Level.extend({
     this.showGoal(command, deferred);
   },
 
-  setHint: function(command, deferred) {
+  defineHint: function(command, deferred) {
     this.level.hint = prompt('Enter a hint! Or blank if you dont want one');
     if (command) { command.finishWith(deferred); }
   },
 
-  setID: function(command, deferred) {
-    var id = prompt('Enter an ID');
-    while (!id || !id.length) {
-      id = prompt('Enter an ID... really this time');
-    }
-    this.level.id = id;
-
-    if (command) { command.finishWith(deferred); }
-  },
-
   finish: function(command, deferred) {
     if (!this.gitCommandsIssued.length) {
-      command.set('error', new GitError({
+      command.set('error', new Errors.GitError({
         msg: 'Your solution is empty!'
-      });
+      }));
       deferred.resolve();
       return;
     }
 
-    if (!this.level.id) {
-      this.setID();
-    }
     if (this.level.hint === undefined) {
       this.setHint();
     }
@@ -239,7 +227,8 @@ var LevelBuilder = Level.extend({
       'define start': this.defineStart,
       'show start': this.showStart,
       'hide start': this.hideStart,
-      'finish': this.finish
+      'finish': this.finish,
+      'define hint': this.defineHint
     };
 
     methodMap[command.get('method')].apply(this, arguments);
diff --git a/src/js/views/levelDropdownView.js b/src/js/views/levelDropdownView.js
index 050ba59e..594ef318 100644
--- a/src/js/views/levelDropdownView.js
+++ b/src/js/views/levelDropdownView.js
@@ -161,14 +161,7 @@ var LevelDropdownView = ContainedBase.extend({
   },
 
   getIndexForID: function(id) {
-    var index;
-    var levels = this.sequenceToLevels[this.selectedSequence];
-    _.each(levels, function(level, _index) {
-      if (level.id == id) {
-        index = _index;
-      }
-    });
-    return index;
+    return Main.getLevelArbiter().getLevel(id).index;
   },
 
   selectFirst: function() {
diff --git a/src/levels/intro/1.js b/src/levels/intro/1.js
index d738ee5f..cf9e7dd1 100644
--- a/src/levels/intro/1.js
+++ b/src/levels/intro/1.js
@@ -1,5 +1,4 @@
 exports.level = {
-  id: 'intro1',
   name: 'Introduction #1',
   startDialog: {
     childViews: [{
diff --git a/src/levels/intro/2.js b/src/levels/intro/2.js
index fbeda24a..256b1c8d 100644
--- a/src/levels/intro/2.js
+++ b/src/levels/intro/2.js
@@ -1,5 +1,4 @@
 exports.level = {
-  id: 'intro2',
   name: 'Introduction #1',
   goalTreeString: '{"branches":{"master":{"target":"C1","id":"master"},"win":{"target":"C2","id":"win"}},"commits":{"C0":{"parents":[],"id":"C0","rootCommit":true},"C1":{"parents":["C0"],"id":"C1"},"C2":{"parents":["C1"],"id":"C2"}},"HEAD":{"target":"win","id":"HEAD"}}',
   solutionCommand: 'git checkout -b win; git commit',
diff --git a/src/levels/rebase/1.js b/src/levels/rebase/1.js
index d4b913cd..256b1c8d 100644
--- a/src/levels/rebase/1.js
+++ b/src/levels/rebase/1.js
@@ -1,5 +1,4 @@
 exports.level = {
-  id: 'rebase1',
   name: 'Introduction #1',
   goalTreeString: '{"branches":{"master":{"target":"C1","id":"master"},"win":{"target":"C2","id":"win"}},"commits":{"C0":{"parents":[],"id":"C0","rootCommit":true},"C1":{"parents":["C0"],"id":"C1"},"C2":{"parents":["C1"],"id":"C2"}},"HEAD":{"target":"win","id":"HEAD"}}',
   solutionCommand: 'git checkout -b win; git commit',
diff --git a/src/levels/rebase/2.js b/src/levels/rebase/2.js
index 3a688514..256b1c8d 100644
--- a/src/levels/rebase/2.js
+++ b/src/levels/rebase/2.js
@@ -1,5 +1,4 @@
 exports.level = {
-  id: 'rebase2',
   name: 'Introduction #1',
   goalTreeString: '{"branches":{"master":{"target":"C1","id":"master"},"win":{"target":"C2","id":"win"}},"commits":{"C0":{"parents":[],"id":"C0","rootCommit":true},"C1":{"parents":["C0"],"id":"C1"},"C2":{"parents":["C1"],"id":"C2"}},"HEAD":{"target":"win","id":"HEAD"}}',
   solutionCommand: 'git checkout -b win; git commit',
diff --git a/src/levels/rebase/3.js b/src/levels/rebase/3.js
index 251727bc..256b1c8d 100644
--- a/src/levels/rebase/3.js
+++ b/src/levels/rebase/3.js
@@ -1,5 +1,4 @@
 exports.level = {
-  id: 'rebase3',
   name: 'Introduction #1',
   goalTreeString: '{"branches":{"master":{"target":"C1","id":"master"},"win":{"target":"C2","id":"win"}},"commits":{"C0":{"parents":[],"id":"C0","rootCommit":true},"C1":{"parents":["C0"],"id":"C1"},"C2":{"parents":["C1"],"id":"C2"}},"HEAD":{"target":"win","id":"HEAD"}}',
   solutionCommand: 'git checkout -b win; git commit',
diff --git a/todo.txt b/todo.txt
index 8306317b..f635e205 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,6 +1,5 @@
 Big Things
 ~~~~~~~~~~~~~~~~~~~~~~~~~
-[ ] level builder finish
 [ ] level builder dialog tester
 [ ] level builder dialog builder
 
@@ -32,6 +31,7 @@ Ideas for cleaning
 Done things:
 (I only started this on Dec 17th 2012 to get a better sense of what was done)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[x] level builder finish
 [x] level builder? :OOO
     * basically just an extension of level (or sandbox), that has commands like
       ```save tree beginning``` or ```save tree goal``` and then a final