Platform Game (Update)

I added monster to the game they like any old game they move right and left

class Enemy(pygame.sprite.Sprite):
	def __init__(self, x, y):
		pygame.sprite.Sprite.__init__(self)
		self.image = pygame.image.load('img/blob.png')
		self.rect = self.image.get_rect()
		self.rect.x = x
		self.rect.y = y
		self.move_direction = 1
		self.move_counter = 0

this the class for the enemy

I add lava and made it too take damage also a game over by making it into ghost i add all the code in update class

			if pygame.sprite.spritecollide(self, blob_group, False):
				game_over = -1

			#check for collision with lava
			if pygame.sprite.spritecollide(self, lava_group, False):
				game_over = -1

			#update player coordinates
			self.rect.x += dx
			self.rect.y += dy


		elif game_over == -1:
			self.image = self.dead_image
			if self.rect.y > 200:
				self.rect.y -= 5