diff --git a/space_adventure.py b/space_adventure.py
index 7411aa0..78a73ef 100644
--- a/space_adventure.py
+++ b/space_adventure.py
@@ -82,15 +82,15 @@ def update(self):
         self.speed_x = 0
         keystate = pygame.key.get_pressed()
         if keystate[pygame.K_LEFT]:
-            self.speed_x = 8
+            self.speed_x = -8  # Changed from 8 to -8 for correct left movement
         if keystate[pygame.K_RIGHT]:
-            self.speed_x = -8
+            self.speed_x = 8   # Changed from -8 to 8 for correct right movement
 
         self.rect.x += self.speed_x
-        if self.rect.right > SCREEN_WIDTH + 20:
-            self.rect.right = SCREEN_WIDTH + 20
-        if self.rect.left < -20:
-            self.rect.left = -20
+        if self.rect.right > SCREEN_WIDTH:
+            self.rect.right = SCREEN_WIDTH
+        if self.rect.left < 0:
+            self.rect.left = 0
 
     def shoot(self):
         if not self.hidden:
@@ -99,9 +99,13 @@ def shoot(self):
                 all_sprites.add(bullet)
                 bullets.add(bullet)
             elif self.power_level >= 2:
-                bullet1 = Bullet(self.rect.centerx, self.rect.top)
+                # Create two bullets side by side
+                bullet1 = Bullet(self.rect.centerx - 10, self.rect.top)  # Left bullet
+                bullet2 = Bullet(self.rect.centerx + 10, self.rect.top)  # Right bullet
                 all_sprites.add(bullet1)
+                all_sprites.add(bullet2)
                 bullets.add(bullet1)
+                bullets.add(bullet2)
 
     def hide(self):
         self.hidden = True
@@ -145,10 +149,10 @@ def __init__(self, x, y):
         self.rect = self.image.get_rect()
         self.rect.centerx = x
         self.rect.bottom = y
-        self.speedy = 1
+        self.speedy = 10  # Increased bullet speed from 1 to 10
 
     def update(self):
-        self.rect.y += self.speedy
+        self.rect.y -= self.speedy  # Changed += to -= so bullets move upward
         if self.rect.bottom < 0:
             self.kill()
 
@@ -267,9 +271,9 @@ def main_game():
         all_sprites.update()
         
         # Check bullet-enemy collisions
-        hits = pygame.sprite.groupcollide(enemies, bullets, False, True)
+        hits = pygame.sprite.groupcollide(enemies, bullets, True, True)  # Changed False to True so enemies are destroyed when hit
         for hit in hits:
-            score += 10
+            score += 100  # Changed from 10 to 100 points per enemy destroyed
             # Create explosion
             explosion = Explosion(hit.rect.center, 30)
             all_sprites.add(explosion)
@@ -293,7 +297,7 @@ def main_game():
             all_sprites.add(new_enemy)
             enemies.add(new_enemy)
             if player.shield <= 0:
-                # player.lives -= 1
+                player.lives -= 1  # Uncommented this line to reduce lives when shield is depleted
                 player.shield = 100
                 player.hide()
                 if player.lives == 0:
@@ -306,11 +310,25 @@ def main_game():
                 player.shield += 20
                 if player.shield > 100:
                     player.shield = 100
+                # Display shield powerup text
+                draw_text(screen, "+SHIELD", 18, player.rect.centerx, player.rect.top - 10)
             if hit.type == 'power':
                 player.powerup()
+                # Display power powerup text
+                draw_text(screen, "+POWER LEVEL " + str(player.power_level), 18, player.rect.centerx, player.rect.top - 10)
+                
+            # Show visual feedback by updating the display immediately
+            pygame.display.flip()
         
         if game_over:
-            pass
+            # Display Game Over message
+            draw_text(screen, "GAME OVER", 64, SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2)
+            pygame.display.flip()
+            # Wait for a few seconds
+            pygame.time.delay(2000)  # Wait for 2 seconds
+            running = False  # Exit the game loop
+            pygame.quit()
+            sys.exit()  # Make sure to completely exit the game
             
         # Draw / render
         screen.fill(BLACK)
@@ -321,6 +339,12 @@ def main_game():
         draw_shield_bar(screen, 5, 5, player.shield)
         draw_lives(screen, SCREEN_WIDTH - 100, 5, player.lives, player_mini_img)
         
+        # Draw power level indicator if powered up
+        if player.power_level > 1:
+            time_left = 5 - (pygame.time.get_ticks() - player.power_timer) / 1000
+            if time_left > 0:
+                draw_text(screen, f"POWER LEVEL: {player.power_level} ({time_left:.1f}s)", 18, SCREEN_WIDTH / 2, 30)
+        
         # Flip the display
         pygame.display.flip()