added boss (final commit)

Assets/Code/Gameplay/Enemies/FeatherProjectile.cs

@@ -0,0 +1,41 @@
+using Code.Gameplay.Player;
+using UnityEngine;
+
+namespace Code.Gameplay.Enemies
+{
+    public class FeatherProjectile : MonoBehaviour
+    {
+        [SerializeField] private float _speed = 6f;
+        [SerializeField] private float _lifetime = 3f;
+        [SerializeField] private LayerMask _playerLayer;
+
+        private Vector2 _direction;
+        private float _timer;
+
+        public void Launch(float angle)
+        {
+            var rad = angle * Mathf.Deg2Rad;
+            _direction = new Vector2(Mathf.Cos(rad), Mathf.Sin(rad));
+
+            transform.rotation = Quaternion.Euler(0, 0, angle);
+        }
+
+        private void Update()
+        {
+            transform.Translate(_direction * (_speed * Time.deltaTime), Space.World);
+        
+            var hit = Physics2D.OverlapCircle(transform.position, 0.4f, _playerLayer);
+            if (hit && hit.CompareTag("Player"))
+            {
+                hit.GetComponent<PlayerHealth>()?.TakeDamage();
+                Destroy(gameObject);
+            }
+
+            _timer += Time.deltaTime;
+            if (_timer > _lifetime)
+            {
+                Destroy(gameObject);
+            }
+        }
+    }
+}