They Are not Invincible mostly tho they stkill take dasmage from other op npcs

You guys are both wrong. Thor, the Swamp Thing, and King Alastor are not invincible. They have their own ways to be hit. For example, You have to hit Thor's hammer to get him to his second phase, King alastor has to be shot in the circles that spawn, and Swamp Thing's floating orbs have to be shot in order to get him to the point of dealing damage.

引用自 necrodancer：

You guys are both wrong. Thor, the Swamp Thing, and King Alastor are not invincible. They have their own ways to be hit. For example, You have to hit Thor's hammer to get him to his second phase, King alastor has to be shot in the circles that spawn, and Swamp Thing's floating orbs have to be shot in order to get him to the point of dealing damage.

okay thanks. I found out about Thor's hammer, but not Swamp Thing or King Alastor

OK. I'm not really sure about King Alastor if the method works or not because in the game, once you take damage in the circle it's meant to spawn a golem that hits him but in gmod it doesn't hit him so he might be impossible to kill unless I'm just dumb.