A lot of these aren't bypassing invulnerability persay it's just not all of a target's part or parts were invulnerable to damage to begin with. Come on, it's just weak point exploitation. Like if you kill a bulletproof-skinned animal by chucking a bomb into its mouth, would that be bypassing the animal's bulletproof skin or just exploiting the part of an animal that isn't invulnerable at all? 

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