diff --git a/scenes/Iron.tscn b/scenes/Iron.tscn
new file mode 100644
index 0000000..33965f6
--- /dev/null
+++ b/scenes/Iron.tscn
@@ -0,0 +1,27 @@
+[gd_scene format=3 uid="uid://g7iron5etp8u"]
+
+[ext_resource type="Script" uid="uid://0wdmbocpe2ir" path="res://scripts/Iron.gd" id="1_iron"]
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_1"]
+albedo_color = Color(0.55, 0.58, 0.62, 1)
+metallic = 0.7
+metallic_specular = 0.8
+roughness = 0.4
+
+[sub_resource type="BoxMesh" id="BoxMesh_1"]
+size = Vector3(0.38, 0.22, 0.5)
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_1"]
+size = Vector3(0.38, 0.22, 0.5)
+
+[node name="Iron" type="CharacterBody3D" unique_id=611454609]
+script = ExtResource("1_iron")
+
+[node name="IronMesh" type="MeshInstance3D" parent="." unique_id=1832879739]
+transform = Transform3D(3.5611715, 0, 0, 0, 2.7614622, 0, 0, 0, 1, 0, 0.2, 0)
+material_override = SubResource("StandardMaterial3D_1")
+mesh = SubResource("BoxMesh_1")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="." unique_id=665808333]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.2, 0)
+shape = SubResource("BoxShape3D_1")
diff --git a/scenes/Level.tscn b/scenes/Level.tscn
index c8ec1da..39a8ff3 100644
--- a/scenes/Level.tscn
+++ b/scenes/Level.tscn
@@ -62,6 +62,22 @@ radius = 1.0966797
 [sub_resource type="BoxShape3D" id="BoxShape3D_qifjx"]
 size = Vector3(2.2670898, 1, 3.7305298)
 
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_forge"]
+albedo_color = Color(0.28, 0.24, 0.2, 1)
+roughness = 0.95
+
+[sub_resource type="BoxMesh" id="BoxMesh_forge"]
+size = Vector3(2, 1.8, 2)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_chimney"]
+albedo_color = Color(0.2, 0.18, 0.16, 1)
+
+[sub_resource type="BoxMesh" id="BoxMesh_chimney"]
+size = Vector3(0.6, 1, 0.6)
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_forge"]
+size = Vector3(2, 1.8, 2)
+
 [node name="Level" type="Node3D" unique_id=696519]
 script = ExtResource("1_ppgk2")
 show_grid = false
@@ -210,3 +226,19 @@ shape = SubResource("CylinderShape3D_6vs76")
 [node name="CollisionShape3D3" type="CollisionShape3D" parent="stone_big_static_body" unique_id=1397239926]
 transform = Transform3D(1.9385185, 0, -0.69275445, 0, 2.0585828, 0, 0.69275445, 0, 1.9385185, 60.670692, 1.6238549, 36.420376)
 shape = SubResource("CylinderShape3D_6vs76")
+
+[node name="Forge" type="StaticBody3D" parent="." unique_id=734179063]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 8, 0.9, -8)
+metadata/is_forge = true
+
+[node name="ForgeMesh" type="MeshInstance3D" parent="Forge" unique_id=1062255408]
+material_override = SubResource("StandardMaterial3D_forge")
+mesh = SubResource("BoxMesh_forge")
+
+[node name="ChimneyMesh" type="MeshInstance3D" parent="Forge" unique_id=1649367044]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.5, 1.4, -0.4)
+material_override = SubResource("StandardMaterial3D_chimney")
+mesh = SubResource("BoxMesh_chimney")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="Forge" unique_id=726531191]
+shape = SubResource("BoxShape3D_forge")
diff --git a/scenes/MetalArmor.tscn b/scenes/MetalArmor.tscn
new file mode 100644
index 0000000..e099a27
--- /dev/null
+++ b/scenes/MetalArmor.tscn
@@ -0,0 +1,28 @@
+[gd_scene format=3 uid="uid://h8armor4fura"]
+
+[ext_resource type="Script" path="res://scripts/MetalArmor.gd" id="1_armor"]
+
+[sub_resource type="BoxMesh" id="BoxMesh_1"]
+size = Vector3(0.55, 0.7, 0.25)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_1"]
+albedo_color = Color(0.55, 0.60, 0.68, 1)
+roughness = 0.3
+metallic = 0.85
+metallic_specular = 1.0
+
+[node name="MetalArmor" type="Node3D"]
+script = ExtResource("1_armor")
+
+[node name="ArmorMesh" type="MeshInstance3D" parent="."]
+mesh = SubResource("BoxMesh_1")
+material_override = SubResource("StandardMaterial3D_1")
+
+[node name="Tooltip" type="Label3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.0, 0)
+billboard = 1
+double_sided = true
+text = "[E] Metal Armor
++1 Tier"
+font_size = 32
+outline_size = 6
diff --git a/scripts/Enemy.gd b/scripts/Enemy.gd
index a533a41..067324a 100644
--- a/scripts/Enemy.gd
+++ b/scripts/Enemy.gd
@@ -3,6 +3,7 @@ extends CharacterBody3D
 
 const PICKUP_SCENE  := preload("res://scenes/Pickup.tscn")
 const LEATHER_SCENE := preload("res://scenes/Leather.tscn")
+const IRON_SCENE    := preload("res://scenes/Iron.tscn")
 
 signal died(points: int)
 signal merged(upgrade: bool)
@@ -10,6 +11,7 @@ signal merged(upgrade: bool)
 enum State { CHASING, FLYING, STUNNED, DEAD, MERGING }
 
 static var first_leather_spawned: bool = false
+static var first_iron_spawned: bool = false
 
 var kickable_type: String = ""
 var tier: int = 1
@@ -54,7 +56,6 @@ func setup(type: String, wave: int) -> void:
 	enemy_type = type
 	kickable_type = type
 	wave_num = wave
-	tier = enemy_level
 	match type:
 		"slime":
 			move_speed = 2.8 + wave * 0.12
@@ -82,6 +83,7 @@ func setup(type: String, wave: int) -> void:
 			COLOR_CHASE = Color(0.3, 0.7, 0.3)
 			mat.albedo_color = COLOR_CHASE
 			enemy_level = 3
+	tier = enemy_level
 
 func _physics_process(delta: float) -> void:
 	match state:
@@ -267,6 +269,14 @@ func _try_drop_pickup() -> void:
 			get_parent().add_child(leather)
 			leather.global_position = global_position
 
+	if enemy_level == 2:
+		var drop_iron := not first_iron_spawned or randf() < 0.20
+		if drop_iron:
+			first_iron_spawned = true
+			var iron := IRON_SCENE.instantiate() as Node3D
+			get_parent().add_child(iron)
+			iron.global_position = global_position
+
 	var roll := randf()
 	var p_type := ""
 	var p_heal := 0
diff --git a/scripts/Iron.gd b/scripts/Iron.gd
new file mode 100644
index 0000000..29477ab
--- /dev/null
+++ b/scripts/Iron.gd
@@ -0,0 +1,134 @@
+extends CharacterBody3D
+
+const METAL_ARMOR_SCENE := preload("res://scenes/MetalArmor.tscn")
+
+signal destroyed
+
+enum State { IDLE, FLYING }
+
+const AIR_FRICTION  := 0.86
+const MIN_SPEED     := 0.5
+const WALL_BOUNCE   := 0.45
+const WALL_SELF_DMG := 0.5
+
+var kickable_type: String = "iron"
+var tier: int = 2
+var state: State = State.IDLE
+var fly_vel: Vector3 = Vector3.ZERO
+var health: float = 80.0
+var dead: bool = false
+var damage_modifier: float = 0.9
+
+@onready var mesh_node: MeshInstance3D = $IronMesh
+var iron_mat: StandardMaterial3D
+
+const COLOR_IDLE   := Color(0.55, 0.58, 0.62)
+const COLOR_IMPACT := Color(1.0, 1.0, 1.0)
+
+func _ready() -> void:
+	add_to_group("kickable")
+	iron_mat = mesh_node.material_override.duplicate() as StandardMaterial3D
+	mesh_node.material_override = iron_mat
+
+func apply_collision_damage(dmg: float) -> void:
+	_take_damage(dmg)
+
+func receive_kick(direction: Vector3, force: float) -> void:
+	fly_vel = direction * force
+	fly_vel.y = 0.0
+	state = State.FLYING
+
+func _physics_process(delta: float) -> void:
+	if state == State.IDLE:
+		return
+	_fly(delta)
+
+func _fly(delta: float) -> void:
+	var speed_now := Vector2(fly_vel.x, fly_vel.z).length()
+	velocity = fly_vel
+	velocity.y = 0.0
+	move_and_slide()
+
+	var handled := false
+	for i in get_slide_collision_count():
+		var col := get_slide_collision(i)
+		var col3d := col.get_collider() as Node3D
+		if col3d == null:
+			continue
+		if col3d.has_meta("is_forge"):
+			_hit_forge(col3d)
+			return
+		if col3d.has_meta("is_wall"):
+			var normal := col.get_normal()
+			normal.y = 0.0
+			if normal.length() > 0.01:
+				fly_vel = fly_vel.bounce(normal.normalized()) * WALL_BOUNCE
+			else:
+				fly_vel = Vector3.ZERO
+			_take_damage(speed_now * WALL_SELF_DMG)
+			handled = true
+			break
+		elif col3d.is_in_group("enemies") or col3d.is_in_group("kickable"):
+			if col3d == self:
+				continue
+			KickSystem.resolve(self, col3d, fly_vel)
+			if not dead and is_instance_valid(col3d):
+				var kick_dir := col3d.global_position - global_position
+				kick_dir.y = 0.0
+				if kick_dir.length() > 0.01:
+					col3d.call("receive_kick", kick_dir.normalized(), speed_now * 0.65)
+			fly_vel *= 0.45
+			handled = true
+			break
+
+	if not handled:
+		fly_vel = velocity
+		fly_vel.y = 0.0
+
+	fly_vel *= pow(AIR_FRICTION, delta * 60.0)
+
+	if Vector2(fly_vel.x, fly_vel.z).length() < MIN_SPEED:
+		fly_vel = Vector3.ZERO
+		velocity = Vector3.ZERO
+		state = State.IDLE
+
+	mesh_node.rotation.y += delta * speed_now * 0.3
+
+func _hit_forge(forge: Node3D) -> void:
+	if dead:
+		return
+	dead = true
+	state = State.IDLE
+	set_physics_process(false)
+	var parent := get_parent()
+	var spawn_pos := forge.global_position + Vector3(5, 0, 0)
+	queue_free()
+	if parent == null:
+		return
+	var armor := METAL_ARMOR_SCENE.instantiate() as Node3D
+	parent.add_child(armor)
+	armor.global_position = spawn_pos
+
+func _take_damage(dmg: float) -> void:
+	if dead:
+		return
+	health -= dmg
+	_flash()
+	if health <= 0.0:
+		_die()
+
+func _die() -> void:
+	dead = true
+	state = State.IDLE
+	set_physics_process(false)
+	emit_signal("destroyed")
+	var tw := create_tween()
+	tw.tween_property(self, "scale", Vector3(1.6, 0.1, 1.6), 0.12)
+	tw.tween_property(self, "scale", Vector3(0.0, 0.0, 0.0), 0.1)
+	tw.tween_callback(queue_free)
+
+func _flash() -> void:
+	var tw := create_tween()
+	tw.tween_property(iron_mat, "albedo_color", COLOR_IMPACT, 0.04)
+	var target_color := COLOR_IDLE.lerp(Color.RED, clampf(1.0 - health / 80.0, 0.0, 0.6))
+	tw.tween_property(iron_mat, "albedo_color", target_color, 0.18)
diff --git a/scripts/Iron.gd.uid b/scripts/Iron.gd.uid
new file mode 100644
index 0000000..c899564
--- /dev/null
+++ b/scripts/Iron.gd.uid
@@ -0,0 +1 @@
+uid://0wdmbocpe2ir
diff --git a/scripts/Main.gd b/scripts/Main.gd
index 481e34a..acb912c 100644
--- a/scripts/Main.gd
+++ b/scripts/Main.gd
@@ -171,6 +171,7 @@ func _start_game() -> void:
 	kills = 0
 	kills_for_next = 10
 	Enemy.first_leather_spawned = false
+	Enemy.first_iron_spawned = false
 	_update_labels()
 	spawn_timer.wait_time = 1.4
 	spawn_timer.connect("timeout", _on_spawn_timer)
diff --git a/scripts/MetalArmor.gd b/scripts/MetalArmor.gd
new file mode 100644
index 0000000..fa5c49d
--- /dev/null
+++ b/scripts/MetalArmor.gd
@@ -0,0 +1,23 @@
+extends Node3D
+
+@onready var tooltip: Label3D = $Tooltip
+
+func _ready() -> void:
+	add_to_group("interactable")
+	tooltip.visible = false
+	var tw := create_tween().set_loops()
+	tw.tween_property(self, "position:y", 0.5, 0.7)
+	tw.tween_property(self, "position:y", 0.2, 0.7)
+
+func _process(delta: float) -> void:
+	rotation.y += delta * 1.4
+	var players := get_tree().get_nodes_in_group("player")
+	if players.is_empty():
+		tooltip.visible = false
+		return
+	var p := players[0] as Node3D
+	tooltip.visible = p != null and global_position.distance_to(p.global_position) < 2.5
+
+func interact(player: Node) -> void:
+	player.call("apply_upgrade_armor")
+	queue_free()
diff --git a/scripts/MetalArmor.gd.uid b/scripts/MetalArmor.gd.uid
new file mode 100644
index 0000000..af7061e
--- /dev/null
+++ b/scripts/MetalArmor.gd.uid
@@ -0,0 +1 @@
+uid://cqp1ucyvnno7i
diff --git a/scripts/Player.gd b/scripts/Player.gd
index 478df9d..e82133d 100644
--- a/scripts/Player.gd
+++ b/scripts/Player.gd
@@ -235,3 +235,9 @@ func apply_upgrade_boots(speed_bonus: float, _tier: int) -> void:
 	var tw := create_tween()
 	tw.tween_property(player_mat, "albedo_color", Color(1.0, 0.85, 0.2), 0.1)
 	tw.tween_property(player_mat, "albedo_color", BASE_COLOR, 0.4)
+
+func apply_upgrade_armor() -> void:
+	tier += 1
+	var tw := create_tween()
+	tw.tween_property(player_mat, "albedo_color", Color(0.7, 0.8, 1.0), 0.1)
+	tw.tween_property(player_mat, "albedo_color", BASE_COLOR, 0.5)