After finally beating the Wall of Flesh, your world plunges into Hard Mode, a more brutal and dangerous setting that completely changes the core fundamentals of what the world runs by, adding more difficult monsters and even adding new biomes. While trying to make yourself back up to the surface, your way is blocked by what seems to be one of those new monsters. It appears to be some kind of living armor, blocking your path, tilting its head as it notices you. You are unsure what to do now...