Hi there! I have two questions.
1 - Which emulators are allowed for runs?
2 - Are there any guides or tutorials for the run?
Idk about guides but I made some videos back in the day of some strategies. You can check my YT channel I guess: https://www.youtube.com/@abcdefghilihgfedcba/search?query=advance%20wars%202
For example I have a video of Factory Blues in 2′41″ which you might find useful idk.