Hello again, Captain,
Just dropping by to let you know that the tutorial guide I was building for the Raycasting Game Maker is finally complete. I wasn't sure for a while whether I would finish it or not, but I'm very happy to say it's all together now. Ancient Metal ended up making a few appearances in screenshots and video examples throughout the guide, so I wanted to thank you again for letting me include it.
Here is a link to the finished guide: https://filmgamerj.itch.io/guide-to-raycasting-game-maker