diff --git a/README.md b/README.md
index 8fee551..7a95983 100644
--- a/README.md
+++ b/README.md
@@ -164,3 +164,31 @@ Set your user name:
 Set your email:
 
 `git config --global user.email "mona@lisa.com"`
+
+## Working from a branch
+
+It is a good idea to create a branch each time you are working on a major milestone. For the sake of the course, you should create a branch for each week.
+
+`git checkout -b week2`
+
+As always, you will add and commit your changes into the branch.
+
+`git add .`
+`git commit -m "some message"`
+
+And if you wish, you can push the new branch to the remote repository just like you did with the main branch.
+
+`git push origin week2`
+
+Now you can work away without fear of messing up your project. Because if you need to, you can always revert back to the main branch, undoing all your changes. 
+
+
+`git checkout -b main`
+
+From the main branch, you can merge your updates from the week2 branch by simply using: 
+
+`git merge week2`
+
+And after that, you are free to push the updates up to your repo.
+
+`git push origin main`
diff --git a/week2/codeprimer.md b/week2/codeprimer.md
index 5797b19..a6c3bd0 100644
--- a/week2/codeprimer.md
+++ b/week2/codeprimer.md
@@ -105,7 +105,7 @@ A very typical example is a variable that should be assigned during the “ready
 
 The “onready” decorator takes care of this by making sure the variable is assigned during the ready state.
 
-@onready var animated_sprite = $AnimatedSprite2D
+`@onready var animated_sprite = $AnimatedSprite2D`
 
 Note that the $ in front of the value assigned is a shortcut designation for the current scope. It is called an operator, and is used to retrieve children of the parent node.
 
diff --git a/week2/updated_files/.godot/editor/bullet.tscn-editstate-6d8e6ff1e6f20a36e0402d27c623c86c.cfg b/week2/updated_files/.godot/editor/bullet.tscn-editstate-6d8e6ff1e6f20a36e0402d27c623c86c.cfg
index 9b6c34e..ac475b5 100644
--- a/week2/updated_files/.godot/editor/bullet.tscn-editstate-6d8e6ff1e6f20a36e0402d27c623c86c.cfg
+++ b/week2/updated_files/.godot/editor/bullet.tscn-editstate-6d8e6ff1e6f20a36e0402d27c623c86c.cfg
@@ -8,7 +8,7 @@ Anim={
 "grid_snap_active": false,
 "grid_step": Vector2(8, 8),
 "grid_visibility": 1,
-"ofs": Vector2(-53.4626, -32.546),
+"ofs": Vector2(-145.758, -32.546),
 "primary_grid_step": Vector2i(8, 8),
 "show_group_gizmos": true,
 "show_guides": true,
@@ -175,4 +175,4 @@ Anim={
 "zfar": 4000.01,
 "znear": 0.05
 }
-selected_nodes=Array[NodePath]([NodePath("/root/@EditorNode@16886/@Panel@13/@VBoxContainer@14/DockHSplitLeftL/DockHSplitLeftR/DockHSplitMain/@VBoxContainer@25/DockVSplitCenter/@VSplitContainer@52/@VBoxContainer@53/@PanelContainer@98/MainScreen/@CanvasItemEditor@9272/@VSplitContainer@9094/@HSplitContainer@9096/@HSplitContainer@9098/@Control@9099/@SubViewportContainer@9100/@SubViewport@9101/Game")])
+selected_nodes=Array[NodePath]([NodePath("/root/@EditorNode@16886/@Panel@13/@VBoxContainer@14/DockHSplitLeftL/DockHSplitLeftR/DockHSplitMain/@VBoxContainer@25/DockVSplitCenter/@VSplitContainer@52/@VBoxContainer@53/@PanelContainer@98/MainScreen/@CanvasItemEditor@9272/@VSplitContainer@9094/@HSplitContainer@9096/@HSplitContainer@9098/@Control@9099/@SubViewportContainer@9100/@SubViewport@9101/Game/level")])
diff --git a/week2/updated_files/.godot/editor/character.tscn-editstate-b6bd7a241034177d7fe082a7597ba8ea.cfg b/week2/updated_files/.godot/editor/character.tscn-editstate-b6bd7a241034177d7fe082a7597ba8ea.cfg
index 9c53f0f..9e2a893 100644
--- a/week2/updated_files/.godot/editor/character.tscn-editstate-b6bd7a241034177d7fe082a7597ba8ea.cfg
+++ b/week2/updated_files/.godot/editor/character.tscn-editstate-b6bd7a241034177d7fe082a7597ba8ea.cfg
@@ -175,4 +175,4 @@ Anim={
 "zfar": 4000.01,
 "znear": 0.05
 }
-selected_nodes=Array[NodePath]([NodePath("/root/@EditorNode@16886/@Panel@13/@VBoxContainer@14/DockHSplitLeftL/DockHSplitLeftR/DockHSplitMain/@VBoxContainer@25/DockVSplitCenter/@VSplitContainer@52/@VBoxContainer@53/@PanelContainer@98/MainScreen/@CanvasItemEditor@9272/@VSplitContainer@9094/@HSplitContainer@9096/@HSplitContainer@9098/@Control@9099/@SubViewportContainer@9100/@SubViewport@9101/Game")])
+selected_nodes=Array[NodePath]([NodePath("/root/@EditorNode@16886/@Panel@13/@VBoxContainer@14/DockHSplitLeftL/DockHSplitLeftR/DockHSplitMain/@VBoxContainer@25/DockVSplitCenter/@VSplitContainer@52/@VBoxContainer@53/@PanelContainer@98/MainScreen/@CanvasItemEditor@9272/@VSplitContainer@9094/@HSplitContainer@9096/@HSplitContainer@9098/@Control@9099/@SubViewportContainer@9100/@SubViewport@9101/Game/level")])
diff --git a/week2/updated_files/.godot/editor/editor_layout.cfg b/week2/updated_files/.godot/editor/editor_layout.cfg
index dcd2182..a52cf41 100644
--- a/week2/updated_files/.godot/editor/editor_layout.cfg
+++ b/week2/updated_files/.godot/editor/editor_layout.cfg
@@ -40,8 +40,8 @@ selected_bottom_panel_item=0
 
 [ScriptEditor]
 
-open_scripts=["res://scripts/bullet.gd", "res://scripts/CharacterBody2D.gd", "res://scripts/gamecontroller.gd"]
-selected_script="res://scripts/gamecontroller.gd"
+open_scripts=["res://scripts/bullet.gd", "res://scripts/CharacterBody2D.gd", "res://scripts/gamecontroller.gd", "res://scripts/Trigger.gd"]
+selected_script="res://scripts/Trigger.gd"
 open_help=[]
 script_split_offset=70
 list_split_offset=0
diff --git a/week2/updated_files/.godot/editor/filesystem_cache8 b/week2/updated_files/.godot/editor/filesystem_cache8
index 5e52383..58db59a 100644
--- a/week2/updated_files/.godot/editor/filesystem_cache8
+++ b/week2/updated_files/.godot/editor/filesystem_cache8
@@ -1,11 +1,11 @@
 ea4bc82a6ad023ab7ee23ee620429895
-::res://::1725900023
+::res://::1725904718
 icon.svg::CompressedTexture2D::9114977118871582245::1718541837::1718541843::1::::<><>::
 ::res://assets/::1718552371
-::res://scenes/::1724629924
-bullet.tscn::PackedScene::6880909734590904373::1724629924::0::1::::<><>::res://scripts/bullet.gd
-character.tscn::PackedScene::451838158579532324::1724629924::0::1::::<><>::res://scripts/CharacterBody2D.gd
-game.tscn::PackedScene::1738196330916037717::1724629924::0::1::::<><>::res://scripts/gamecontroller.gd<>uid://go4yc8hfo1gq::::res://scenes/character.tscn<>res://scripts/Trigger.gd
+::res://scenes/::1725900535
+bullet.tscn::PackedScene::6880909734590904373::1725900535::0::1::::<><>::res://scripts/bullet.gd
+character.tscn::PackedScene::451838158579532324::1725900535::0::1::::<><>::res://scripts/CharacterBody2D.gd
+game.tscn::PackedScene::1738196330916037717::1725900535::0::1::::<><>::res://scripts/gamecontroller.gd<>uid://go4yc8hfo1gq::::res://scenes/character.tscn<>res://scripts/Trigger.gd
 ::res://scripts/::1722021779
 bullet.gd::GDScript::-1::1722021779::0::1::::<>Area2D<>::
 CharacterBody2D.gd::GDScript::-1::1721179661::0::1::::<>CharacterBody2D<>::
diff --git a/week2/updated_files/.godot/editor/filesystem_update4 b/week2/updated_files/.godot/editor/filesystem_update4
index 7972f7c..f123e9a 100644
--- a/week2/updated_files/.godot/editor/filesystem_update4
+++ b/week2/updated_files/.godot/editor/filesystem_update4
@@ -1,3 +1,4 @@
 res://scenes/game.tscn
+res://scripts/CharacterBody2D.gd
 res://scenes/character.tscn
 res://scenes/bullet.tscn
diff --git a/week2/updated_files/.godot/editor/game.tscn-editstate-c2a7af834e91ff64325daddf58e45dc0.cfg b/week2/updated_files/.godot/editor/game.tscn-editstate-c2a7af834e91ff64325daddf58e45dc0.cfg
index c69d6f4..fc6bae6 100644
--- a/week2/updated_files/.godot/editor/game.tscn-editstate-c2a7af834e91ff64325daddf58e45dc0.cfg
+++ b/week2/updated_files/.godot/editor/game.tscn-editstate-c2a7af834e91ff64325daddf58e45dc0.cfg
@@ -175,4 +175,4 @@ Anim={
 "zfar": 4000.01,
 "znear": 0.05
 }
-selected_nodes=Array[NodePath]([NodePath("/root/@EditorNode@16886/@Panel@13/@VBoxContainer@14/DockHSplitLeftL/DockHSplitLeftR/DockHSplitMain/@VBoxContainer@25/DockVSplitCenter/@VSplitContainer@52/@VBoxContainer@53/@PanelContainer@98/MainScreen/@CanvasItemEditor@9272/@VSplitContainer@9094/@HSplitContainer@9096/@HSplitContainer@9098/@Control@9099/@SubViewportContainer@9100/@SubViewport@9101/Game")])
+selected_nodes=Array[NodePath]([NodePath("/root/@EditorNode@16886/@Panel@13/@VBoxContainer@14/DockHSplitLeftL/DockHSplitLeftR/DockHSplitMain/@VBoxContainer@25/DockVSplitCenter/@VSplitContainer@52/@VBoxContainer@53/@PanelContainer@98/MainScreen/@CanvasItemEditor@9272/@VSplitContainer@9094/@HSplitContainer@9096/@HSplitContainer@9098/@Control@9099/@SubViewportContainer@9100/@SubViewport@9101/Game/level")])
diff --git a/week2/updated_files/.godot/editor/game.tscn-folding-c2a7af834e91ff64325daddf58e45dc0.cfg b/week2/updated_files/.godot/editor/game.tscn-folding-c2a7af834e91ff64325daddf58e45dc0.cfg
index 9356504..781c64d 100644
--- a/week2/updated_files/.godot/editor/game.tscn-folding-c2a7af834e91ff64325daddf58e45dc0.cfg
+++ b/week2/updated_files/.godot/editor/game.tscn-folding-c2a7af834e91ff64325daddf58e45dc0.cfg
@@ -2,4 +2,4 @@
 
 node_unfolds=[NodePath("."), PackedStringArray("Transform"), NodePath("RigidBody2D"), PackedStringArray("Transform"), NodePath("RigidBody2D/CollisionShape2D"), PackedStringArray("Transform"), NodePath("groundblock"), PackedStringArray("Transform"), NodePath("groundblock/CollisionShape2D"), PackedStringArray("Transform"), NodePath("groundblock2"), PackedStringArray("Transform"), NodePath("groundblock2/CollisionShape2D"), PackedStringArray("Transform"), NodePath("level/groundblock2"), PackedStringArray("Transform"), NodePath("level/groundblock2/CollisionShape2D"), PackedStringArray("Transform"), NodePath("level/groundblock3"), PackedStringArray("Transform"), NodePath("level/groundblock3/CollisionShape2D"), PackedStringArray("Transform"), NodePath("level/StaticBody2D"), PackedStringArray("Transform"), NodePath("CharacterBody2D"), PackedStringArray("Transform"), NodePath("Area2D"), PackedStringArray("Transform")]
 resource_unfolds=["res://scenes/game.tscn::RectangleShape2D_4vo4d", PackedStringArray("Resource"), "res://scenes/game.tscn::RectangleShape2D_cq7kj", PackedStringArray("Resource"), "res://scenes/game.tscn::WorldBoundaryShape2D_3u4a8", PackedStringArray("Resource"), "res://scenes/game.tscn::CircleShape2D_x8qck", PackedStringArray("Resource")]
-nodes_folded=[]
+nodes_folded=[NodePath("RigidBody2D"), NodePath("groundblock"), NodePath("groundblock2"), NodePath("level"), NodePath("Area2D")]
diff --git a/week2/updated_files/.godot/editor/project_metadata.cfg b/week2/updated_files/.godot/editor/project_metadata.cfg
index 02b8b9f..9b24e37 100644
--- a/week2/updated_files/.godot/editor/project_metadata.cfg
+++ b/week2/updated_files/.godot/editor/project_metadata.cfg
@@ -12,7 +12,7 @@ run_debug_collisions=true
 [recent_files]
 
 scenes=["res://scenes/bullet.tscn", "res://scenes/character.tscn", "res://scenes/game.tscn"]
-scripts=["res://scripts/bullet.gd", "res://scripts/CharacterBody2D.gd", "res://scripts/gamecontroller.gd"]
+scripts=["res://scripts/Trigger.gd", "res://scripts/bullet.gd", "res://scripts/CharacterBody2D.gd", "res://scripts/gamecontroller.gd"]
 
 [linked_properties]
 
diff --git a/week2/updated_files/.godot/editor/script_editor_cache.cfg b/week2/updated_files/.godot/editor/script_editor_cache.cfg
index 08fd8f3..3794381 100644
--- a/week2/updated_files/.godot/editor/script_editor_cache.cfg
+++ b/week2/updated_files/.godot/editor/script_editor_cache.cfg
@@ -3,10 +3,10 @@
 state={
 "bookmarks": PackedInt32Array(),
 "breakpoints": PackedInt32Array(),
-"column": 0,
+"column": 45,
 "folded_lines": Array[int]([]),
 "h_scroll_position": 0,
-"row": 0,
+"row": 13,
 "scroll_position": 0.0,
 "selection": false,
 "syntax_highlighter": "GDScript"
@@ -17,12 +17,16 @@ state={
 state={
 "bookmarks": PackedInt32Array(),
 "breakpoints": PackedInt32Array(),
-"column": 52,
+"column": 12,
 "folded_lines": Array[int]([]),
 "h_scroll_position": 0,
-"row": 47,
-"scroll_position": 30.0,
-"selection": false,
+"row": 33,
+"scroll_position": 22.0,
+"selection": true,
+"selection_from_column": 2,
+"selection_from_line": 33,
+"selection_to_column": 12,
+"selection_to_line": 33,
 "syntax_highlighter": "GDScript"
 }
 
@@ -39,3 +43,17 @@ state={
 "selection": false,
 "syntax_highlighter": "GDScript"
 }
+
+[res://scripts/Trigger.gd]
+
+state={
+"bookmarks": PackedInt32Array(),
+"breakpoints": PackedInt32Array(),
+"column": 0,
+"folded_lines": Array[int]([]),
+"h_scroll_position": 0,
+"row": 0,
+"scroll_position": 0.0,
+"selection": false,
+"syntax_highlighter": "GDScript"
+}
diff --git a/week2/updated_files/scripts/CharacterBody2D.gd b/week2/updated_files/scripts/CharacterBody2D.gd
index 4ea0614..cdbae93 100644
--- a/week2/updated_files/scripts/CharacterBody2D.gd
+++ b/week2/updated_files/scripts/CharacterBody2D.gd
@@ -31,7 +31,6 @@ func _physics_process(delta):
 		velocity.y = JUMP_VELOCITY
 	# Hand force push (melee attack)
 	if Input.is_action_just_pressed("push") && pushRightEnabled && faceLeft == false:
-		print("I should force push")
 		pushTarget.apply_central_impulse(Vector2(1,0) * PUSH_FORCE * 10)
 		pushRightEnabled = false
 	if Input.is_action_just_pressed("push") && pushLeftEnabled:
diff --git a/week4/updated_project/.godot/editor/filesystem_cache8 b/week4/updated_project/.godot/editor/filesystem_cache8
index 4a9d765..cf99634 100644
--- a/week4/updated_project/.godot/editor/filesystem_cache8
+++ b/week4/updated_project/.godot/editor/filesystem_cache8
@@ -1,5 +1,5 @@
 ea4bc82a6ad023ab7ee23ee620429895
-::res://::1724630360
+::res://::1725904667
 icon.svg::CompressedTexture2D::9114977118871582245::1722277386::1722277386::1::::<><>::
 ::res://graphics/::1722285155
 Terrain (32x32).png::CompressedTexture2D::8707534964839485024::1722277386::1722277386::1::::<><>::
@@ -17,12 +17,12 @@ player jump 48x48.png::CompressedTexture2D::1627608568707791839::1722277386::172
 player land 48x48.png::CompressedTexture2D::3499637713582873633::1722277386::1722277386::1::::<><>::
 ::res://graphics/Player Run/::1722277386
 player run 48x48.png::CompressedTexture2D::1502492849971408816::1722277386::1722277386::1::::<><>::
-::res://scenes/::1724626017
-bullet.tscn::PackedScene::6880909734590904373::1724626017::0::1::::<><>::res://scripts/bullet.gd
-character.tscn::PackedScene::451838158579532324::1724626017::0::1::::<><>::res://scripts/CharacterBody2D.gd<>uid://c0iiaebonyhh0::::res://graphics/Player Idle/Player Idle 48x48.png<>uid://xgoqfqmvorcx::::res://graphics/Player Jump/player jump 48x48.png<>uid://vn23qn3f0dvc::::res://graphics/Player Run/player run 48x48.png
-crate.tscn::PackedScene::41931541512830250::1724626017::0::1::::<><>::uid://ddxm7hj323fta::::res://graphics/items/cannister.png
-game.tscn::PackedScene::1738196330916037717::1724626017::0::1::::<><>::res://scripts/gamecontroller.gd<>uid://go4yc8hfo1gq::::res://scenes/character.tscn<>uid://dwb83f7uoweuy::::res://graphics/Terrain (32x32).png<>res://scripts/Trigger.gd<>uid://ukuu7p7vhlq::::res://scenes/crate.tscn<>uid://dvd1p6xue0ub2::::res://scenes/platform.tscn<>uid://dly4g7fvvtamm::::res://graphics/background/BG Image.png<>uid://cw50mfjp2np08::::res://graphics/background/Additional Sky.png<>uid://6olcj1w1svdg::::res://graphics/background/Additional Water.png
-platform.tscn::PackedScene::8641027994130079701::1724626017::0::1::::<><>::
+::res://scenes/::1724634527
+bullet.tscn::PackedScene::6880909734590904373::1724634489::0::1::::<><>::res://scripts/bullet.gd
+character.tscn::PackedScene::451838158579532324::1724634489::0::1::::<><>::res://scripts/CharacterBody2D.gd<>uid://c0iiaebonyhh0::::res://graphics/Player Idle/Player Idle 48x48.png<>uid://xgoqfqmvorcx::::res://graphics/Player Jump/player jump 48x48.png<>uid://vn23qn3f0dvc::::res://graphics/Player Run/player run 48x48.png
+crate.tscn::PackedScene::41931541512830250::1724634489::0::1::::<><>::uid://ddxm7hj323fta::::res://graphics/items/cannister.png
+game.tscn::PackedScene::1738196330916037717::1724634527::0::1::::<><>::res://scripts/gamecontroller.gd<>uid://go4yc8hfo1gq::::res://scenes/character.tscn<>uid://dwb83f7uoweuy::::res://graphics/Terrain (32x32).png<>res://scripts/Trigger.gd<>uid://ukuu7p7vhlq::::res://scenes/crate.tscn<>uid://dvd1p6xue0ub2::::res://scenes/platform.tscn<>uid://dly4g7fvvtamm::::res://graphics/background/BG Image.png<>uid://cw50mfjp2np08::::res://graphics/background/Additional Sky.png<>uid://6olcj1w1svdg::::res://graphics/background/Additional Water.png
+platform.tscn::PackedScene::8641027994130079701::1724634489::0::1::::<><>::
 ::res://scripts/::1722811640
 bullet.gd::GDScript::-1::1722277386::0::1::::<>Area2D<>::
 CharacterBody2D.gd::GDScript::-1::1722287010::0::1::::<>CharacterBody2D<>::
diff --git a/week4/updated_project/.godot/editor/filesystem_update4 b/week4/updated_project/.godot/editor/filesystem_update4
deleted file mode 100644
index 901a6f7..0000000
--- a/week4/updated_project/.godot/editor/filesystem_update4
+++ /dev/null
@@ -1,5 +0,0 @@
-res://scenes/game.tscn
-res://scenes/character.tscn
-res://scenes/bullet.tscn
-res://scenes/crate.tscn
-res://scenes/platform.tscn