diff --git a/assets/sprites/plants/Wallnut.tres b/assets/sprites/plants/Wallnut.tres
new file mode 100644
index 0000000..7a875b3
--- /dev/null
+++ b/assets/sprites/plants/Wallnut.tres
@@ -0,0 +1,7 @@
+[gd_resource type="AtlasTexture" load_steps=2 format=3 uid="uid://g2oppl54efja"]
+
+[ext_resource type="Texture2D" uid="uid://dvldjlg0nr355" path="res://assets/sprites/atlases/atlas1.png" id="1_rqu4e"]
+
+[resource]
+atlas = ExtResource("1_rqu4e")
+region = Rect2(104, 12, 41, 46)
diff --git a/resources/plants/Wallnut.tres b/resources/plants/Wallnut.tres
new file mode 100644
index 0000000..c38ae93
--- /dev/null
+++ b/resources/plants/Wallnut.tres
@@ -0,0 +1,14 @@
+[gd_resource type="Resource" script_class="PlantResource" load_steps=4 format=3 uid="uid://c2e2yj7rgoswi"]
+
+[ext_resource type="Texture2D" uid="uid://g2oppl54efja" path="res://assets/sprites/plants/Wallnut.tres" id="1_2akap"]
+[ext_resource type="Script" path="res://scripts/resources/PlantResource.cs" id="1_27l0t"]
+[ext_resource type="PackedScene" uid="uid://dh6rm7o3taaek" path="res://scenes/entities/plants/wallnut.tscn" id="2_l87er"]
+
+[resource]
+script = ExtResource("1_27l0t")
+Cost = 50
+Scene = ExtResource("2_l87er")
+ReloadTime = 20.0
+StartReloadTime = 0.0
+Preview = ExtResource("1_2akap")
+Layer = 1
diff --git a/scenes/entities/plants/wallnut.tscn b/scenes/entities/plants/wallnut.tscn
new file mode 100644
index 0000000..65ee600
--- /dev/null
+++ b/scenes/entities/plants/wallnut.tscn
@@ -0,0 +1,129 @@
+[gd_scene load_steps=12 format=3 uid="uid://dh6rm7o3taaek"]
+
+[ext_resource type="Texture2D" uid="uid://dstqh1wc5dvmo" path="res://assets/sprites/atlases/plants/wallnut.png" id="1_571nl"]
+[ext_resource type="Script" path="res://scripts/components/plants/RuntimePlantData.cs" id="1_mt5mt"]
+[ext_resource type="Script" path="res://scripts/components/plants/behaviours/WallnutBehaviour.cs" id="3_tu4pm"]
+
+[sub_resource type="Animation" id="Animation_s4r5j"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [0]
+}
+
+[sub_resource type="Animation" id="Animation_lfaj3"]
+resource_name = "idle_full"
+length = 6.00005
+loop_mode = 1
+step = 0.5
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1),
+"update": 1,
+"values": [0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33]
+}
+
+[sub_resource type="Animation" id="Animation_u73od"]
+resource_name = "idle_low"
+length = 5.50005
+loop_mode = 1
+step = 0.5
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1),
+"update": 1,
+"values": [2, 5, 8, 11, 14, 17, 20, 23, 26, 29, 32]
+}
+
+[sub_resource type="Animation" id="Animation_c8ofx"]
+resource_name = "idle_mid"
+length = 6.00005
+loop_mode = 1
+step = 0.5
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1),
+"update": 1,
+"values": [1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31, 34]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_7mgid"]
+_data = {
+"RESET": SubResource("Animation_s4r5j"),
+"idle_full": SubResource("Animation_lfaj3"),
+"idle_low": SubResource("Animation_u73od"),
+"idle_mid": SubResource("Animation_c8ofx")
+}
+
+[sub_resource type="VisualShader" id="VisualShader_w5h5j"]
+code = "shader_type canvas_item;
+render_mode blend_mix;
+
+
+
+"
+graph_offset = Vector2(-551.922, -202.033)
+mode = 1
+flags/light_only = false
+nodes/fragment/0/position = Vector2(660, 100)
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_a0k73"]
+shader = SubResource("VisualShader_w5h5j")
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_523ui"]
+size = Vector2(33, 46)
+
+[node name="Wallnut" type="Node2D"]
+script = ExtResource("1_mt5mt")
+_maxHP = 1000
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+libraries = {
+"": SubResource("AnimationLibrary_7mgid")
+}
+autoplay = "idle_full"
+
+[node name="Sprite" type="Sprite2D" parent="."]
+material = SubResource("ShaderMaterial_a0k73")
+texture = ExtResource("1_571nl")
+hframes = 3
+vframes = 12
+
+[node name="Behaviour" type="Node" parent="."]
+script = ExtResource("3_tu4pm")
+
+[node name="Hitbox" type="Area2D" parent="."]
+collision_layer = 2
+collision_mask = 0
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Hitbox"]
+position = Vector2(3.5, 5)
+shape = SubResource("RectangleShape2D_523ui")
+
+[connection signal="OnHPChanged" from="." to="Behaviour" method="OnHPChanged"]
diff --git a/scenes/gui/runtime_gui.tscn b/scenes/gui/runtime_gui.tscn
index 9b7a344..4fbf1bb 100644
--- a/scenes/gui/runtime_gui.tscn
+++ b/scenes/gui/runtime_gui.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=14 format=3 uid="uid://cfnmspei3k4p7"]
+[gd_scene load_steps=15 format=3 uid="uid://cfnmspei3k4p7"]
 
 [ext_resource type="PackedScene" uid="uid://ky35veswaytr" path="res://scenes/gui/sun_counter.tscn" id="1_le3od"]
 [ext_resource type="Theme" uid="uid://b8l285cjcgeyi" path="res://resources/GameStyle.tres" id="1_xf6ra"]
@@ -9,6 +9,7 @@
 [ext_resource type="PackedScene" uid="uid://cgm7td1hgs0rr" path="res://scenes/gui/fast_forward_button.tscn" id="4_66uy4"]
 [ext_resource type="Resource" uid="uid://drm42f48urvc4" path="res://resources/plants/Sunflower.tres" id="5_6vih5"]
 [ext_resource type="PackedScene" uid="uid://u5l3jd00s8vd" path="res://scenes/gui/pause_button.tscn" id="5_jyq78"]
+[ext_resource type="Resource" uid="uid://c2e2yj7rgoswi" path="res://resources/plants/Wallnut.tres" id="7_x5txp"]
 
 [sub_resource type="StyleBoxTexture" id="StyleBoxTexture_ps2iw"]
 texture = ExtResource("2_eg3hk")
@@ -18,6 +19,20 @@ texture_margin_right = 4.0
 texture_margin_bottom = 4.0
 axis_stretch_horizontal = 1
 
+[sub_resource type="Animation" id="Animation_c8fnk"]
+length = 0.001
+tracks/0/type = "bezier"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath(".:color:a")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"handle_modes": PackedInt32Array(0),
+"points": PackedFloat32Array(0, -0.25, 0, 0.25, 0),
+"times": PackedFloat32Array(0)
+}
+
 [sub_resource type="Animation" id="Animation_ffxdv"]
 resource_name = "flash"
 length = 0.3
@@ -34,20 +49,6 @@ tracks/0/keys = {
 "times": PackedFloat32Array(0, 0.3)
 }
 
-[sub_resource type="Animation" id="Animation_c8fnk"]
-length = 0.001
-tracks/0/type = "bezier"
-tracks/0/imported = false
-tracks/0/enabled = true
-tracks/0/path = NodePath(".:color:a")
-tracks/0/interp = 1
-tracks/0/loop_wrap = true
-tracks/0/keys = {
-"handle_modes": PackedInt32Array(0),
-"points": PackedFloat32Array(0, -0.25, 0, 0.25, 0),
-"times": PackedFloat32Array(0)
-}
-
 [sub_resource type="AnimationLibrary" id="AnimationLibrary_myv2j"]
 _data = {
 "RESET": SubResource("Animation_c8fnk"),
@@ -96,6 +97,7 @@ _resource = ExtResource("5_6vih5")
 
 [node name="ThirdSlot" parent="Hotbar/PanelContainer/Seedpackets" instance=ExtResource("2_cjtsw")]
 layout_mode = 2
+_resource = ExtResource("7_x5txp")
 
 [node name="FourthSlot" parent="Hotbar/PanelContainer/Seedpackets" instance=ExtResource("2_cjtsw")]
 layout_mode = 2
diff --git a/scripts/components/plants/RuntimePlantData.cs b/scripts/components/plants/RuntimePlantData.cs
index cbdc329..2b2ccda 100644
--- a/scripts/components/plants/RuntimePlantData.cs
+++ b/scripts/components/plants/RuntimePlantData.cs
@@ -15,6 +15,9 @@ public partial class RuntimePlantData : Node2D, IEntity
     public int Line {get; set;}
     public PlantResource Resource;
 
+    [Signal]
+    public delegate void OnHPChangedEventHandler(int amount);
+
     public override void _Ready()
     {
         _hp = _maxHP;
@@ -24,6 +27,8 @@ public partial class RuntimePlantData : Node2D, IEntity
     {
         _hp += amount;
 
+        EmitSignal(SignalName.OnHPChanged,amount);
+
         if (MaxHp > 0)
         {
             _hp = MaxHp;
@@ -34,6 +39,8 @@ public partial class RuntimePlantData : Node2D, IEntity
     {
         _hp -= amount;
 
+        EmitSignal(SignalName.OnHPChanged,-amount);
+
         if (_hp <= 0)
         {
             Kill();
diff --git a/scripts/components/plants/behaviours/WallnutBehaviour.cs b/scripts/components/plants/behaviours/WallnutBehaviour.cs
new file mode 100644
index 0000000..a886c0b
--- /dev/null
+++ b/scripts/components/plants/behaviours/WallnutBehaviour.cs
@@ -0,0 +1,25 @@
+using Godot;
+using System;
+
+public partial class WallnutBehaviour : Node
+{
+    private AnimationPlayer _player;
+    private RuntimePlantData _data;
+    public override void _Ready()
+    {
+        _player = GetNode<AnimationPlayer>("../AnimationPlayer");
+        _data = GetParent<RuntimePlantData>();
+    }
+
+    public void OnHPChanged(int amount)
+    {
+        if(_data.Hp <= _data.MaxHp*2.0/3.0 && _data.Hp > _data.MaxHp/3.0)
+        {
+            _player.Play("idle_mid");
+        }
+        else if(_data.Hp < _data.MaxHp/3.0)
+        {
+            _player.Play("idle_low");
+        }
+    }
+}