diff --git a/resources/bar_background.png b/resources/bar_background.png
new file mode 100644
index 0000000..ab57540
Binary files /dev/null and b/resources/bar_background.png differ
diff --git a/resources/bar_background.png.import b/resources/bar_background.png.import
new file mode 100644
index 0000000..4903644
--- /dev/null
+++ b/resources/bar_background.png.import
@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dkv6xa8ir2j27"
+path="res://.godot/imported/bar_background.png-35ce8beb14ccfaf777d8509da9ea057d.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://resources/bar_background.png"
+dest_files=["res://.godot/imported/bar_background.png-35ce8beb14ccfaf777d8509da9ea057d.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
diff --git a/resources/bar_foreground.png b/resources/bar_foreground.png
new file mode 100644
index 0000000..9ed11be
Binary files /dev/null and b/resources/bar_foreground.png differ
diff --git a/resources/bar_foreground.png.import b/resources/bar_foreground.png.import
new file mode 100644
index 0000000..505a776
--- /dev/null
+++ b/resources/bar_foreground.png.import
@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cs0do05fosv40"
+path="res://.godot/imported/bar_foreground.png-43a726296b8c8f0bd9259ff035b044ae.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://resources/bar_foreground.png"
+dest_files=["res://.godot/imported/bar_foreground.png-43a726296b8c8f0bd9259ff035b044ae.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
diff --git a/scenes/EnemyBullet.gd b/scenes/EnemyBullet.gd
new file mode 100644
index 0000000..b9c9546
--- /dev/null
+++ b/scenes/EnemyBullet.gd
@@ -0,0 +1,17 @@
+extends Area2D
+
+@export var speed = 150
+
+func start(pos):
+    position = pos
+
+func _process(delta):
+    position.y += speed * delta
+
+func _on_visible_on_screen_notifier_2d_screen_exited():
+    queue_free()
+
+func _on_area_entered(area):
+    if area.name == "Player":
+        queue_free()
+        area.shield -= 1
diff --git a/scenes/EnemyBullet.gd.uid b/scenes/EnemyBullet.gd.uid
new file mode 100644
index 0000000..e1301b7
--- /dev/null
+++ b/scenes/EnemyBullet.gd.uid
@@ -0,0 +1 @@
+uid://denqaif0c3kk2
diff --git a/scenes/EnemyBullet.tscn b/scenes/EnemyBullet.tscn
new file mode 100644
index 0000000..e7e2fe4
--- /dev/null
+++ b/scenes/EnemyBullet.tscn
@@ -0,0 +1,22 @@
+[gd_scene load_steps=4 format=3 uid="uid://pwikm8fsvc2p"]
+
+[ext_resource type="Script" uid="uid://denqaif0c3kk2" path="res://scenes/EnemyBullet.gd" id="1_s6wdq"]
+[ext_resource type="Texture2D" uid="uid://dubjbfdp6ep34" path="res://resources/Mini Pixel Pack 3/Projectiles/Enemy_projectile (16 x 16).png" id="2_la4vt"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_eoqba"]
+size = Vector2(6, 6)
+
+[node name="EnemyBullet" type="Area2D"]
+script = ExtResource("1_s6wdq")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+texture = ExtResource("2_la4vt")
+hframes = 4
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("RectangleShape2D_eoqba")
+
+[node name="VisibleOnScreenNotifier2D" type="VisibleOnScreenNotifier2D" parent="."]
+
+[connection signal="area_entered" from="." to="." method="_on_area_entered"]
+[connection signal="screen_exited" from="VisibleOnScreenNotifier2D" to="." method="_on_visible_on_screen_notifier_2d_screen_exited"]
diff --git a/scenes/enemy.gd b/scenes/enemy.gd
index bcb3afe..beca33e 100644
--- a/scenes/enemy.gd
+++ b/scenes/enemy.gd
@@ -1,31 +1,35 @@
 extends Area2D
 
+var bullet_scene = preload("res://scenes/EnemyBullet.tscn")
 signal died
 
 var start_pos = Vector2.ZERO
 var speed = 0
 
-@onready var screensize  = get_viewport_rect().size
+@onready var screensize = get_viewport_rect().size
 
 func start(pos):
-    speed = 0
-    position = Vector2(pos.x, -pos.y)
-    start_pos = pos
-    await get_tree().create_timer(randf_range(0.25, 0.55)).timeout
-    var tween = create_tween().set_trans(Tween.TRANS_BACK)
-    tween.tween_property(self, "position:y", start_pos.y, 1.4)
-    await tween.finished
-    $MoveTimer.wait_time = randf_range(5, 20)
-    $MoveTimer.start()
-    $ShootTimer.wait_time = randf_range(4, 20)
-    $ShootTimer.start()
+  speed = 0
+  position = Vector2(pos.x, -pos.y)
+  start_pos = pos
+  await get_tree().create_timer(randf_range(0.25, 0.55)).timeout
+  var tween = create_tween().set_trans(Tween.TRANS_BACK)
+  tween.tween_property(self, "position:y", start_pos.y, 1.4)
+  await tween.finished
+  $MoveTimer.wait_time = randf_range(5, 20)
+  $MoveTimer.start()
+  $ShootTimer.wait_time = randf_range(4, 20)
+  $ShootTimer.start()
 
 func _on_timer_timeout():
     speed = randf_range(75, 100)
 
 func _on_shoot_timer_timeout():
-    $ShootTimer.wait_time = randf_range(4, 20)
-    $ShootTimer.start()
+  var b = bullet_scene.instantiate()
+  get_tree().root.add_child(b)
+  b.start(position)
+  $ShootTimer.wait_time = randf_range(4, 20)
+  $ShootTimer.start()
 
 func _process(delta):
     position.y += speed * delta
diff --git a/scenes/main.gd b/scenes/main.gd
index defd2d8..0ccfd4a 100644
--- a/scenes/main.gd
+++ b/scenes/main.gd
@@ -18,3 +18,4 @@ func spawn_enemies():
 
 func _on_enemy_died(value):
     score += value
+    $CanvasLayer/UI.update_score(score)
diff --git a/scenes/main.tscn b/scenes/main.tscn
index 5e1a0ae..b1ed8da 100644
--- a/scenes/main.tscn
+++ b/scenes/main.tscn
@@ -1,9 +1,10 @@
-[gd_scene load_steps=8 format=3 uid="uid://ce5rw02b3373d"]
+[gd_scene load_steps=9 format=3 uid="uid://ce5rw02b3373d"]
 
 [ext_resource type="Script" uid="uid://b2tub370i3s3v" path="res://scenes/main.gd" id="1_jyhfs"]
 [ext_resource type="Texture2D" uid="uid://jj8b7vqj3ihx" path="res://resources/Mini Pixel Pack 3/Space_BG (2 frames) (64 x 64).png" id="2_tbgi4"]
 [ext_resource type="PackedScene" uid="uid://bkuucjejc7p2v" path="res://scenes/player.tscn" id="3_tefeu"]
 [ext_resource type="PackedScene" uid="uid://c4vq2ytntfvoj" path="res://scenes/enemy.tscn" id="4_o6xl0"]
+[ext_resource type="PackedScene" uid="uid://k0yw686ys6ug" path="res://scenes/ui.tscn" id="5_tbgi4"]
 
 [sub_resource type="Animation" id="Animation_vcsgt"]
 length = 0.001
@@ -62,3 +63,11 @@ libraries = {
 autoplay = "scroll"
 
 [node name="Enemy" parent="." instance=ExtResource("4_o6xl0")]
+position = Vector2(-13, 3)
+
+[node name="CanvasLayer" type="CanvasLayer" parent="."]
+
+[node name="UI" parent="CanvasLayer" instance=ExtResource("5_tbgi4")]
+
+[connection signal="area_entered" from="Player" to="Player" method="_on_area_entered"]
+[connection signal="shield_changed" from="Player" to="CanvasLayer/UI" method="update_shield"]
diff --git a/scenes/player.gd b/scenes/player.gd
index 163f4dd..3bed4cd 100644
--- a/scenes/player.gd
+++ b/scenes/player.gd
@@ -1,5 +1,12 @@
 extends Area2D
 
+signal died
+signal shield_changed
+
+@export var max_shield = 10
+var shield = max_shield:
+    set = set_shield
+
 @export var speed = 150
 @export var cooldown = 0.25
 @export var bullet_scene : PackedScene
@@ -26,6 +33,18 @@ func shoot():
 func _on_gun_cooldown_timeout():
     can_shoot = true
 
+func set_shield(value):
+    shield = min(max_shield, value)
+    shield_changed.emit(max_shield, shield)
+    if shield <= 0:
+        hide()
+        died.emit()
+
+func _on_area_entered(area):
+    if area.is_in_group("enemies"):
+        area.explode()
+        shield -= max_shield / 2
+
 func _process(delta):
     var input = Input.get_vector("left", "right", "up", "down")
     if input.x > 0:
diff --git a/scenes/score_counter.gd b/scenes/score_counter.gd
new file mode 100644
index 0000000..ac10812
--- /dev/null
+++ b/scenes/score_counter.gd
@@ -0,0 +1,20 @@
+extends HBoxContainer
+
+var digit_coords = {
+    1: Vector2(0, 0),
+    2: Vector2(8, 0),
+    3: Vector2(16, 0),
+    4: Vector2(24, 0),
+    5: Vector2(32, 0),
+    6: Vector2(0, 8),
+    7: Vector2(8, 8),
+    8: Vector2(16, 8),
+    9: Vector2(24, 8),
+    0: Vector2(32, 8)
+}
+
+func display_digits(n):
+    var s = "%08d" % n
+    for i in 8:
+        get_child(i).texture.region = Rect2(digit_coords[int(s[i])],
+                Vector2(8, 8))
diff --git a/scenes/score_counter.gd.uid b/scenes/score_counter.gd.uid
new file mode 100644
index 0000000..0a6c45a
--- /dev/null
+++ b/scenes/score_counter.gd.uid
@@ -0,0 +1 @@
+uid://dgcss5ggpd777
diff --git a/scenes/score_counter.tscn b/scenes/score_counter.tscn
new file mode 100644
index 0000000..d659007
--- /dev/null
+++ b/scenes/score_counter.tscn
@@ -0,0 +1,84 @@
+[gd_scene load_steps=11 format=3 uid="uid://b3rcs8xlsvm02"]
+
+[ext_resource type="Script" uid="uid://dgcss5ggpd777" path="res://scenes/score_counter.gd" id="1_ep32e"]
+[ext_resource type="Texture2D" uid="uid://ddh7mk2ekhq3u" path="res://resources/Mini Pixel Pack 3/UI objects/Number_font (8 x 8).png" id="2_f43bp"]
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_ep32e"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_f43bp"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_kry78"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_lqfp5"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_2qpgf"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_vbwnf"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_3wgod"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_quku1"]
+atlas = ExtResource("2_f43bp")
+region = Rect2(32, 8, 8, 8)
+
+[node name="ScoreCounter" type="HBoxContainer"]
+anchors_preset = 10
+anchor_right = 1.0
+grow_horizontal = 2
+size_flags_horizontal = 8
+theme_override_constants/separation = 0
+script = ExtResource("1_ep32e")
+
+[node name="Digit0" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_ep32e")
+stretch_mode = 5
+
+[node name="Digit1" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_f43bp")
+stretch_mode = 5
+
+[node name="Digit2" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_kry78")
+stretch_mode = 5
+
+[node name="Digit3" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_lqfp5")
+stretch_mode = 5
+
+[node name="Digit4" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_2qpgf")
+stretch_mode = 5
+
+[node name="Digit5" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_vbwnf")
+stretch_mode = 5
+
+[node name="Digit6" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_3wgod")
+stretch_mode = 5
+
+[node name="Digit7" type="TextureRect" parent="."]
+layout_mode = 2
+texture = SubResource("AtlasTexture_quku1")
+stretch_mode = 5
diff --git a/scenes/ui.gd b/scenes/ui.gd
new file mode 100644
index 0000000..2d683c9
--- /dev/null
+++ b/scenes/ui.gd
@@ -0,0 +1,12 @@
+extends MarginContainer
+
+@onready var shield_bar = $HBoxContainer/ShieldBar
+@onready var score_counter = $HBoxContainer/ScoreCounter
+
+func update_score(value):
+    score_counter.display_digits(value)
+
+
+func update_shield(max_value, value):
+    shield_bar.max_value = max_value
+    shield_bar.value = value
diff --git a/scenes/ui.gd.uid b/scenes/ui.gd.uid
new file mode 100644
index 0000000..76270c1
--- /dev/null
+++ b/scenes/ui.gd.uid
@@ -0,0 +1 @@
+uid://dv6s1gx40k0v1
diff --git a/scenes/ui.tscn b/scenes/ui.tscn
new file mode 100644
index 0000000..ffc2ba4
--- /dev/null
+++ b/scenes/ui.tscn
@@ -0,0 +1,35 @@
+[gd_scene load_steps=5 format=3 uid="uid://k0yw686ys6ug"]
+
+[ext_resource type="Script" uid="uid://dv6s1gx40k0v1" path="res://scenes/ui.gd" id="1_gdt2y"]
+[ext_resource type="Texture2D" uid="uid://dkv6xa8ir2j27" path="res://resources/bar_background.png" id="1_x4jx1"]
+[ext_resource type="Texture2D" uid="uid://cs0do05fosv40" path="res://resources/bar_foreground.png" id="2_yev5y"]
+[ext_resource type="PackedScene" uid="uid://b3rcs8xlsvm02" path="res://scenes/score_counter.tscn" id="4_wm3ai"]
+
+[node name="UI" type="MarginContainer"]
+anchors_preset = 10
+anchor_right = 1.0
+offset_bottom = 10.0
+grow_horizontal = 2
+theme_override_constants/margin_left = 10
+theme_override_constants/margin_top = 10
+theme_override_constants/margin_right = 10
+theme_override_constants/margin_bottom = 10
+script = ExtResource("1_gdt2y")
+
+[node name="HBoxContainer" type="HBoxContainer" parent="."]
+layout_mode = 2
+
+[node name="ShieldBar" type="TextureProgressBar" parent="HBoxContainer"]
+custom_minimum_size = Vector2(80, 16)
+layout_mode = 2
+value = 100.0
+nine_patch_stretch = true
+stretch_margin_left = 3
+stretch_margin_top = 3
+stretch_margin_right = 3
+stretch_margin_bottom = 3
+texture_under = ExtResource("1_x4jx1")
+texture_progress = ExtResource("2_yev5y")
+
+[node name="ScoreCounter" parent="HBoxContainer" instance=ExtResource("4_wm3ai")]
+layout_mode = 2