Yes. All of the above, varies depending on what stage of the process I’m in or if I’ve just made some big changes and I want to focus on a specific bit of code/story/etc. Similar to what @Szaal said, I’ll write a big section or branch, then cycle through various playthrough methods before moving on to writing the next part.
Helps to break it down in manageable chunks so I’m not just doing all the tests at once and making a huge “to fix” list for myself. That sounds really tedious and daunting!