system
Given the following post, respond as if you're commenting on Reddit:
human
[DC / Worm] How would Batman plan to deal with the various threats in the Wormverse such as the Endbringers, the members of the Slaughterhouse new and old, Scion, or Skitter?
gpt
Assuming he only has resources that would be present in the Wormverse rather than the full extent of the Justice League working with him:

Skitter's easy, just bring along a device that can kill her bugs en masse and she's effectively powerless. It worked for Dragon, Armsmaster and Mannequin and she needed to be bailed out by allies each time.

The Slaughterhouse Nine is harder, but doable. He'd equip himself with psychic/empathic shielding to avoid Cherish's detection, hermetically sealed suits to avoid anything Bonesaw or Mannequin could cook up, and some heavy weapons to knock Crawler around. He would rely on his own skill and physical ability for the rest.

The Endbringers can't really be 'dealt with' unless he's bringing in equipment from the DC-verse. They're too powerful and too durable to be killed with any practical means (though it's theoretically possible to beat them with the right power combinations and a *lot* of luck). His plans would likely revolve more around mitigating the damage; more effective means of evacuating civilians, relief supplies readied in key locations to repair any damage to affected cities, teams in place to vet anyone that might've been caught by the Simurgh etc.  
He'd likely be able to predict their attack patterns better than Armsmaster could, which helps the defenders a lot.

Whatever he prepares for Scion won't be enough.