You did not specify that the creature could not be victim to its own attack.
Once it is paralyzed, simply drop a bomb on it from a plane without looking down at it.
An advanced computer algorithm
Develop a unique program "filter" that renders the image of the creature different enough that it does not affect those that stare at the screen. This ...
Wooden boats. Why mess up a working plan?
Lots of them. Maybe all of them.
String them together.
Point row of boats at Chickamauga and fire up the engines.
Crew disembarks from wooden boats and climbs aboard fiberglass boats.
Wooden boats defeat Chunkymugga. Cthulhu snickers.
An artificial intelligence trained to identify giant monster-gods using ...
Why risk people? The USA have mastered the art of dispatching people remotely and without having to look at them. You don't need to look at the creature, just nuke the hell out of its vicinity, and the drones can be preprogrammed for that.
To clarify: no visual processing is needed. If you know where the monster is, all you need to input to your ...
For reference: SCP-096: Shy Guy
That's how The Ominous They deal with a relatively small monster who can't be looked at. Assuming your world-altering Old One is gigantic and more brutishly destructive, the human governments are basically waging a war against a kaiju in addition to the difficulties described in the SCP article.
I assume radar or ...
Considering you are working with really hi-tech power armor, we can assume that these EM shielded suits will also be taking advantage of materials at least as good as we have at our disposal today. A simple layer of graphene thinner than a sheet of paper will make this armor impenetrable by any normal melee weapon; so, it stands to reason that your melee ...
Mechanized melee weapons have been experimented with, and they are the exception, not the norm, for a few very good reasons.
Basically, the more complicated an item is, the less durable it is.
Let's say that a blade made of some fictitious metal we'll call Aresium can be expected to withstand a 1 million joule impact per cubic centimeter of material. Let's ...