User blog comment:Redkite/Season 2, Battle 3, Delta Squad (Republic Commandos) vs. Predators/@comment-4552610-20121230043414/@comment-4098900-20121230223325

Actually, I think that all Young Bloods (Predator who has killed a Xeno) get acid resistant blades after they kill their first Xeno. Until then their blades are not acid resistant.