diff --git a/entities/components/explosive_damage/explosive_damage_component.gd b/entities/components/explosive_damage/explosive_damage_component.gd
index ba2b452..af4fd08 100644
--- a/entities/components/explosive_damage/explosive_damage_component.gd
+++ b/entities/components/explosive_damage/explosive_damage_component.gd
@@ -17,7 +17,7 @@ class_name ExplosiveDamageComponent extends Area3D
 ## Emitted when the scale tween is finished
 signal finished
 
-@export var damage : float = .35
+@export var damage : float = 89
 @export var impulse_force : int = 1000
 var damage_dealer : MatchParticipant
 
diff --git a/entities/components/health_component.gd b/entities/components/health_component.gd
index 56d480a..609f261 100644
--- a/entities/components/health_component.gd
+++ b/entities/components/health_component.gd
@@ -16,14 +16,14 @@ class_name HealthComponent extends Area3D
 
 @export var match_participant : MatchParticipant
 
-@export var max_health : float = 1.
-@export var health : float = 1.:
-	set(value):
-		health = value
-		health_changed.emit(value)
+@export var max_health : int = 255
+@export var health : int = 255:
+	set(new_health):
+		health = new_health
+		health_changed.emit(new_health)
 
 signal health_zeroed(killer_id : int)
-signal health_changed(value : float)
+signal health_changed(new_health : int)
 
 func _ready() -> void:
 	# only collide with the "Damage" layer, disable monitoring completely
@@ -33,17 +33,17 @@ func _ready() -> void:
 	call_deferred("heal_full")
 
 @rpc("call_local", "reliable")
-func damage(amount : float, damage_dealer_player_id : int, damage_dealer_team_id : int) -> void:
+func damage(amount : int, damage_dealer_player_id : int, damage_dealer_team_id : int) -> void:
 	if (damage_dealer_team_id == match_participant.team_id) and (damage_dealer_player_id != match_participant.player_id):
 		return
 
-	health = clampf(health - amount, 0.0, max_health)
-	if health == 0.0:
+	health = clampi(health - amount, 0, max_health)
+	if health == 0:
 		health_zeroed.emit(damage_dealer_player_id)
 
 @rpc("call_local", "reliable")
-func _heal(amount : float) -> void:
-	health = clampf(health + amount, 0.0, max_health)
+func _heal(amount : int) -> void:
+	health = clampi(health + amount, 0, max_health)
 
 func heal_full() -> void:
 	if not is_multiplayer_authority():
diff --git a/entities/player/player.gd b/entities/player/player.gd
index ee51e18..e277f7c 100644
--- a/entities/player/player.gd
+++ b/entities/player/player.gd
@@ -17,7 +17,6 @@ class_name Player extends RigidBody3D
 enum PlayerState { PLAYER_ALIVE, PLAYER_DEAD }
 
 signal died(player : Player, killer_id : int)
-signal energy_changed(energy : float)
 
 @export var iff : IFF
 @export var health_component : HealthComponent
@@ -67,8 +66,8 @@ func _ready() -> void:
 	match_participant.player_id_changed.connect(input.update_multiplayer_authority)
 	match_participant.username_changed.connect(iff._on_username_changed)
 	
-	health_component.health_changed.connect(hud._on_health_changed)
-	health_component.health_changed.connect(iff._on_health_changed)
+	health_component.health_changed.connect(hud.health_bar.set_value)
+	health_component.health_changed.connect(iff.health_bar.set_value)
 	health_component.health_changed.emit(health_component.health)
 	health_component.health_zeroed.connect(die)
 	
@@ -153,11 +152,10 @@ func _update_jetpack_energy(delta : float) -> void:
 		energy -= energy_drain_rate * delta
 	else:
 		energy += energy_charge_rate * delta
-
 	energy = clamp(energy, 0, energy_max)
-	energy_changed.emit(energy)
+	hud.energy_bar.value = energy
 
-func _handle_movement() -> void:
+func _integrate_forces(_state : PhysicsDirectBodyState3D) -> void:
 	# retrieve user's direction vector
 	var _input_dir : Vector2 = input.direction
 	# compute direction in local space
@@ -199,9 +197,6 @@ func _handle_movement() -> void:
 
 	_jumping = false
 
-func _integrate_forces(_state : PhysicsDirectBodyState3D) -> void:
-	_handle_movement()
-
 func _update_third_person_animations() -> void:
 	if _is_pawn():
 		return
diff --git a/entities/player/player.tscn b/entities/player/player.tscn
index 4d3487b..9cdbb7a 100644
--- a/entities/player/player.tscn
+++ b/entities/player/player.tscn
@@ -4,7 +4,6 @@
 [ext_resource type="PackedScene" uid="uid://bbeecp3jusppn" path="res://interfaces/hud/iffs/IFF.tscn" id="2_s5wgp"]
 [ext_resource type="PackedScene" uid="uid://bcv81ku26xo" path="res://interfaces/hud/hud.tscn" id="3_ccety"]
 [ext_resource type="Shape3D" uid="uid://cb8esdlnottdn" path="res://entities/player/resources/collider.tres" id="4_8kvcy"]
-[ext_resource type="Script" path="res://entities/components/match_participant.gd" id="6_lrose"]
 [ext_resource type="Script" path="res://entities/components/inventory.gd" id="8_768qh"]
 [ext_resource type="PackedScene" uid="uid://drbefw6akui2v" path="res://entities/player/vanguard.tscn" id="8_eiy7q"]
 [ext_resource type="Script" path="res://entities/components/flag_carry_component.gd" id="8_pdfbn"]
@@ -17,6 +16,7 @@
 [ext_resource type="PackedScene" uid="uid://b0xql5hi0b52y" path="res://entities/weapons/chaingun/chaingun.tscn" id="15_io0a3"]
 [ext_resource type="PackedScene" uid="uid://cstl7yxc75572" path="res://entities/weapons/grenade_launcher/grenade_launcher.tscn" id="16_4xs2j"]
 [ext_resource type="PackedScene" uid="uid://d3l7fvbdg6m5g" path="res://entities/flag/assets/flag.glb" id="18_7nkei"]
+[ext_resource type="Script" path="res://entities/components/match_participant.gd" id="18_t2jrs"]
 [ext_resource type="Script" path="res://entities/player/inputs_sync.gd" id="18_v4iu1"]
 
 [sub_resource type="PhysicsMaterial" id="PhysicsMaterial_clur0"]
@@ -374,7 +374,7 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.692504, 1.30946)
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.692504, 1.30946)
 
 [node name="Barrels" parent="ThirdPerson/Mesh/Node/Skeleton3D/HandAttachment/ChainGun" index="3"]
-transform = Transform3D(-1, -1.49012e-08, 8.801e-08, 8.19564e-08, -3.72529e-09, 1, 0, 1, -7.45058e-09, 5.96046e-08, 0, -0.55315)
+transform = Transform3D(-1, 0, 8.9407e-08, 8.47504e-08, 0, 1, 0, 1, -3.72529e-09, -5.96046e-08, 0, -0.55315)
 
 [node name="Skeleton3D" parent="ThirdPerson/Mesh/Node/Skeleton3D/HandAttachment/GrenadeLauncher/Armature" index="0"]
 bones/0/rotation = Quaternion(0, 0.707107, 0.707107, 0)
@@ -436,13 +436,11 @@ script = ExtResource("18_v4iu1")
 replication_config = SubResource("SceneReplicationConfig_5j4ew")
 
 [node name="MatchParticipant" type="Node" parent="."]
-script = ExtResource("6_lrose")
+script = ExtResource("18_t2jrs")
 
 [node name="MatchParticipantSync" type="MultiplayerSynchronizer" parent="MatchParticipant"]
 replication_config = SubResource("SceneReplicationConfig_7na0c")
 
-[connection signal="energy_changed" from="." to="HUD" method="_on_player_energy_changed"]
-
 [editable path="ThirdPerson/Mesh"]
 [editable path="ThirdPerson/Mesh/Node/Skeleton3D/HandAttachment/SpaceGun"]
 [editable path="ThirdPerson/Mesh/Node/Skeleton3D/HandAttachment/SpaceGun/Mesh"]
diff --git a/entities/weapons/chaingun/projectile.gd b/entities/weapons/chaingun/projectile.gd
index f15e115..6782c67 100644
--- a/entities/weapons/chaingun/projectile.gd
+++ b/entities/weapons/chaingun/projectile.gd
@@ -38,7 +38,7 @@ func _physics_process(delta : float) -> void:
 			if collider is Player:
 				if is_multiplayer_authority():
 					assert(shooter)
-					collider.health_component.damage.rpc(.1, shooter.player_id, shooter.team_id)
+					collider.health_component.damage.rpc(25, shooter.player_id, shooter.team_id)
 		queue_free()
 
 ## This method is a parameterized constructor for the [ChainGunProjectile] scene of the [ChainGun]
diff --git a/interfaces/hud/hud.tscn b/interfaces/hud/hud.tscn
index 1fe538d..0f1fa06 100644
--- a/interfaces/hud/hud.tscn
+++ b/interfaces/hud/hud.tscn
@@ -18,27 +18,11 @@ script/source = "# This file is part of open-fpsz.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
-class_name HUD extends CanvasLayer
+extends CanvasLayer
 
-@export_category(\"Vitals\")
-@export var _health_bar : ProgressBar
-@export var _energy_bar : ProgressBar
-
-func _ready() -> void:
-	_update_health_bar(1.)
-	_update_energy_bar(1.)
-
-func _update_energy_bar(energy : float) -> void:
-	_energy_bar.value = energy
-
-func _update_health_bar(health : float) -> void:
-	_health_bar.value = health
-
-func _on_health_changed(new_health : float) -> void:
-	_update_health_bar(new_health)
-
-func _on_player_energy_changed(new_energy : float) -> void:
-	_update_energy_bar(new_energy)
+@export var health_bar : ProgressBar
+@export var energy_bar : ProgressBar
+@export var debug_label : Label
 "
 
 [sub_resource type="GDScript" id="GDScript_w8l21"]
@@ -91,10 +75,10 @@ corner_radius_bottom_right = 3
 corner_radius_bottom_left = 3
 anti_aliasing = false
 
-[node name="HUD" type="CanvasLayer" node_paths=PackedStringArray("_health_bar", "_energy_bar")]
+[node name="HUD" type="CanvasLayer" node_paths=PackedStringArray("health_bar", "energy_bar")]
 script = SubResource("GDScript_2vxif")
-_health_bar = NodePath("MarginContainer/HBoxContainer/VBoxContainer/HealthBar")
-_energy_bar = NodePath("MarginContainer/HBoxContainer/VBoxContainer/EnergyBar")
+health_bar = NodePath("MarginContainer/HBoxContainer/VBoxContainer/HealthBar")
+energy_bar = NodePath("MarginContainer/HBoxContainer/VBoxContainer/EnergyBar")
 
 [node name="DebugLabel" type="Label" parent="."]
 offset_left = 20.0
@@ -146,7 +130,8 @@ layout_mode = 2
 mouse_filter = 2
 theme_override_styles/background = ExtResource("1_gmv44")
 theme_override_styles/fill = ExtResource("2_6ejsl")
-max_value = 1.0
+max_value = 255.0
+step = 1.0
 value = 1.0
 show_percentage = false
 
diff --git a/interfaces/hud/iffs/IFF.tscn b/interfaces/hud/iffs/IFF.tscn
index 578c980..e3df3e9 100644
--- a/interfaces/hud/iffs/IFF.tscn
+++ b/interfaces/hud/iffs/IFF.tscn
@@ -2,20 +2,22 @@
 
 [ext_resource type="Script" path="res://interfaces/hud/iffs/iff.gd" id="1_g6kgb"]
 [ext_resource type="Shader" uid="uid://n2dcb4l0qun2" path="res://interfaces/progress_bar/resources/visual_shader.res" id="2_8cjkh"]
-[ext_resource type="Script" path="res://interfaces/progress_bar/progress_bar_3d.gd" id="3_vss6w"]
+[ext_resource type="PackedScene" uid="uid://chy8tm6hvummq" path="res://interfaces/progress_bar/ProgressBar3D.tscn" id="2_h0pl8"]
 [ext_resource type="Texture2D" uid="uid://cpb6vpa0c74rl" path="res://interfaces/waypoint/assets/waypoint.svg" id="4_lrbtk"]
 
-[sub_resource type="ShaderMaterial" id="ShaderMaterial_wrx5m"]
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_4quui"]
 render_priority = 0
 shader = ExtResource("2_8cjkh")
 
-[sub_resource type="QuadMesh" id="QuadMesh_b6wb8"]
-material = SubResource("ShaderMaterial_wrx5m")
+[sub_resource type="QuadMesh" id="QuadMesh_ks8vt"]
+resource_local_to_scene = true
+material = SubResource("ShaderMaterial_4quui")
 size = Vector2(0.35, 0.025)
 center_offset = Vector3(0, 0.09, 0)
 
 [node name="IFF" type="Node3D"]
 script = ExtResource("1_g6kgb")
+value = 128.0
 border = 0.4
 billboard = 1
 
@@ -27,16 +29,12 @@ fixed_size = true
 text = "Username"
 font_size = 24
 
-[node name="HealthBar" type="MeshInstance3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.000610828, 0.0127701, -0.000638008)
-instance_shader_parameters/background = Color(0, 0, 0, 0.5)
+[node name="ProgressBar3D" parent="." instance=ExtResource("2_h0pl8")]
 instance_shader_parameters/billboard = 1
 instance_shader_parameters/border = 0.0
 instance_shader_parameters/fill = Color(1, 1, 1, 1)
-instance_shader_parameters/progress = 1.0
 instance_shader_parameters/size = Vector2(0.35, 0.025)
-mesh = SubResource("QuadMesh_b6wb8")
-script = ExtResource("3_vss6w")
+mesh = SubResource("QuadMesh_ks8vt")
 border = 0.0
 billboard = 1
 fill = Color(1, 1, 1, 1)
diff --git a/interfaces/hud/iffs/iff.gd b/interfaces/hud/iffs/iff.gd
index 58daa50..65ebec4 100644
--- a/interfaces/hud/iffs/iff.gd
+++ b/interfaces/hud/iffs/iff.gd
@@ -25,10 +25,22 @@ signal border_changed(new_border : float)
 # If `true`, the waypoint fades as the camera get closer.
 #@export var fade : bool = true
 
-## The current value for the pgroess bar.
-@export_range(0., 1.) var value : float = 1.:
+## The minimum [member value].
+@export var min_value : float = 0.:
 	set(new_value):
-		value = new_value
+		min_value = new_value
+		value = value
+
+## The maximum [member value].
+@export var max_value : float = 255.:
+	set(new_value):
+		max_value = new_value
+		value = value
+
+## Current value.
+@export var value : float = 255.:
+	set(new_value):
+		value = clampf(new_value, min_value, max_value)
 		health_changed.emit(value)
 
 ## The border for the progress bar.
@@ -63,32 +75,7 @@ signal border_changed(new_border : float)
 
 @onready var label : Label3D = $Username
 @onready var chevron : Sprite3D = $Chevron
-@onready var hbar : ProgressBar3D = $HealthBar
-
-func _on_billboard_changed(new_billboard : int) -> void:
-	label.billboard = new_billboard as BaseMaterial3D.BillboardMode
-	hbar.billboard = new_billboard
-	chevron.billboard = new_billboard as BaseMaterial3D.BillboardMode
-
-func _on_border_changed(new_border : float) -> void:
-	hbar.border = new_border
-
-func _on_username_changed(new_username : String) -> void:
-	# The label's text can only be set once the node is ready.
-	if is_inside_tree():
-		label.text = new_username
-
-func _on_background_changed(color : Color) -> void:
-	label.outline_modulate = color
-	hbar.background = color
-
-func _on_fill_changed(color : Color) -> void:
-	label.modulate = color
-	hbar.fill = color
-	chevron.modulate = color
-
-func _on_health_changed(new_value : float) -> void:
-	hbar.value = new_value
+@onready var health_bar : ProgressBar3D = $ProgressBar3D
 
 func _enter_tree() -> void:
 	if not username_changed.is_connected(_on_username_changed):
@@ -103,3 +90,28 @@ func _enter_tree() -> void:
 		border_changed.connect(_on_border_changed)
 	if not billboard_changed.is_connected(_on_billboard_changed):
 		billboard_changed.connect(_on_billboard_changed)
+
+func _on_billboard_changed(new_billboard : int) -> void:
+	label.billboard = new_billboard as BaseMaterial3D.BillboardMode
+	health_bar.billboard = new_billboard
+	chevron.billboard = new_billboard as BaseMaterial3D.BillboardMode
+
+func _on_border_changed(new_border : float) -> void:
+	health_bar.border = new_border
+
+func _on_username_changed(new_username : String) -> void:
+	# The label's text can only be set once the node is ready.
+	if is_inside_tree():
+		label.text = new_username
+
+func _on_background_changed(color : Color) -> void:
+	label.outline_modulate = color
+	health_bar.background = color
+
+func _on_fill_changed(color : Color) -> void:
+	label.modulate = color
+	health_bar.fill = color
+	chevron.modulate = color
+
+func _on_health_changed(new_value : float) -> void:
+	health_bar.value = new_value
diff --git a/interfaces/progress_bar/ProgressBar3D.tscn b/interfaces/progress_bar/ProgressBar3D.tscn
index 8b98bb8..a258671 100644
--- a/interfaces/progress_bar/ProgressBar3D.tscn
+++ b/interfaces/progress_bar/ProgressBar3D.tscn
@@ -8,6 +8,7 @@ render_priority = 0
 shader = ExtResource("1_07e5d")
 
 [sub_resource type="QuadMesh" id="QuadMesh_fwm7g"]
+resource_local_to_scene = true
 material = SubResource("ShaderMaterial_4quui")
 size = Vector2(1, 0.1)
 
diff --git a/interfaces/progress_bar/progress_bar_3d.gd b/interfaces/progress_bar/progress_bar_3d.gd
index 2bc1b43..d776945 100644
--- a/interfaces/progress_bar/progress_bar_3d.gd
+++ b/interfaces/progress_bar/progress_bar_3d.gd
@@ -12,8 +12,8 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
-## A progress bar using a single quad mesh and a shader.
 @tool
+## An efficient progress bar in 3D using a quad mesh and a shader.
 class_name ProgressBar3D extends MeshInstance3D
 
 ## Emitted when value has been changed.
@@ -22,36 +22,53 @@ signal value_changed(new_value : float)
 const progress_bar_shader : VisualShader = preload(
 	"res://interfaces/progress_bar/resources/visual_shader.res")
 
-## Current value.
-@export_range(0., 1.) var value : float = 1.:
+## The minimum [member value].
+@export var min_value : float = 0.:
 	set(new_value):
-		value = new_value
-		_update_shader_params()
-		value_changed.emit(value)
+		min_value = new_value
+		value = value
 
+## The maximum [member value].
+@export var max_value : float = 255.:
+	set(new_value):
+		max_value = new_value
+		value = value
+
+## The current value.
+@export var value : float = 255.:
+	set = set_value
+
+func set_value(new_value : float) -> void:
+	value = clampf(new_value, min_value, max_value)
+	_update_shader_params()
+	value_changed.emit(value)
+
+## The size of the border.
 @export_range(0., 1.) var border : float = .2:
 	set(new_border):
 		border = new_border
 		_update_shader_params()
 
+## The billboard mode, see [member BaseMaterial3D.BillboardMode] for more details.
 @export_enum("Disabled", "Enabled", "Y-Billboard") var billboard : int = 2:
 	set(new_billboard):
 		billboard = new_billboard
 		_update_shader_params()
 
-## Fill color.
+## The fill color.
 @export var fill : Color = Color.GREEN:
 	set(value):
 		fill = value
 		_update_shader_params()
 
-## Background color.
+## The background color.
 @export var background : Color = Color(0, 0, 0, 0.5):
 	set(value):
 		background = value
 		_update_shader_params()
 
-## setup mesh, material and shader when entering the node tree
+## Setup the [QuadMesh], [ShaderMaterial] and [VisualShader] 
+## when entering the node tree
 func _enter_tree() -> void:
 	# set default mesh
 	if not mesh:
@@ -73,11 +90,11 @@ func _enter_tree() -> void:
 	# update shader params once
 	mesh.emit_changed()
 
-## This method updates shader params
+## This method updates instance shader params
 func _update_shader_params() -> void:
 	set_instance_shader_parameter("background", background)
 	set_instance_shader_parameter("billboard", billboard)
 	set_instance_shader_parameter("border", border)
 	set_instance_shader_parameter("fill", fill)
-	set_instance_shader_parameter("progress", value)
+	set_instance_shader_parameter("progress", value / max_value)
 	set_instance_shader_parameter("size", mesh.size)