This is a really good guide for giving information on what to do in general situations a player will usually find themselves in when having to face a good (or at least decent) .52 Gal player on the enemy team. Of course, there's always going to be more situations that end up playing out in a real match but this covers a really wide range of what a player would be expecting to deal with.
Going over some more specific things such as watching for a .52 Gal using OG was a very nice and unexpected addition.