diff --git a/index.html b/index.html
index ac51185..5317ad1 100644
--- a/index.html
+++ b/index.html
@@ -12,6 +12,8 @@
     <script src="models/unit.js"></script>
     <script src="models/croco-turtle.js"></script>
     <script src="models/monster-bear.js"></script>
+    <script src="models/warrior.js"></script>
+    <script src="models/tree.js"></script>
     <script src="script.js"></script>
 </body>
 
diff --git a/models/croco-turtle.js b/models/croco-turtle.js
index c0e7f6c..ae8e658 100644
--- a/models/croco-turtle.js
+++ b/models/croco-turtle.js
@@ -6,5 +6,9 @@ var CrocoTurtle = (function () {
     CrocoTurtle.prototype = Object.create(Unit.prototype);
     CrocoTurtle.prototype.constructor = CrocoTurtle;
 
+    CrocoTurtle.prototype.step = function() {
+        console.log('Step')
+    }
+    
     return CrocoTurtle;
 }());
diff --git a/models/monkey.js b/models/monkey.js
index b9d646f..fba5cee 100644
--- a/models/monkey.js
+++ b/models/monkey.js
@@ -6,6 +6,8 @@ var Monkey = (function() {
     Monkey.prototype = Object.create(Unit.prototype)
     Monkey.prototype.constructor = Monkey
 
+    
+
     return Monkey;
 }());