I've managed to get all of them, I think I was only missing 3, two of which were losing/winning after 60 alert. It's fairly balanced if you learn and practice but it doesn't give you much direction, I think H and J should be a bit more obvious on the store page?
I will try different combinations of four... I'll see if I can spy a clip of moaning myrtle giving a code phrase, I think she said so in a book. Also GiD stands for Guys in Distress, DiD is Damsels in Distress. CiD is more worrisome for itch.io
Edit: found it, I think it was search and wait 4 times?