In case the guides on speedrun.com break again or have other issues, we're going to mirror all Arkham guides into the Wiki. You can access each of City's guides directly below:

Any% Tutorial by cojosao
Any% Tutorial July 2019
How to remove Catwoman DLC from the GOTY version
Language Differences, and How to Change Languages
Make Game Work Better on Low-end Systems
Mousewheel binds for countering and skipping dialogue
New Game Plus Tutorial
NG- Preparation
Using the Autosplitter