Perhaps the sawblade locust could do damage a little more similar to a wolf bite? or at least just not kill you instantly most of the time? I had all full nutrition bars, full copper lamellar armor. but when i'm mining in a cave and one of these things launches itself at me it has always killed me instantly from full health, usually silently from behind, and then the thing bodyguards my dropped items. Its not very fun, and makes it damn hard to progress from copper to bronze, because it spawns where tin is, and copper Armour cant protect you from a 1 shot.