Suggested by Destroyer Skullman is very fast which is his only chance here. He’ll need to evade Hirudegarn’s attacks and then launch some of his own. The problem is that his hits probably wouldn’t even hurt the monster. Hirudegarn is on a completely different level and he can even end the planet in an instant. There’s not a whole lot that you can do against such a foe. Skullman would very quickly begin to realize that his efforts here are ultimately futile. Hirudegarn wins.