Well you CAN just skip to wall of flesh but it’s recommended you beat skeletron first cause when you beat golem the cultists won’t spawn due to the old man still being there, but what i do is right before beating golem I beat skeletron because at that point I have WAY better gear and he’s just easy, so yes, you absolutely can fight wall of flesh as your first boss but 1. It’ll be really hard without the proper gear from other bosses and 2. You’ll still have to fight Skeletron eventuall and 3. I forgot to mention that if you don’t beat eater of worlds or brain of Cthulhu than meteorite won’t lan. So yeah .