Go inside for a mini tutorial also back pack these then make a blank sprite in your fangame then put them in. This helps reduce lag but it isn’t needed here Also I made it easy to put in your custom soul and other stuff you will still need to modify quite a bit though Unfortunately i didn’t make buttons as I like bossfights without them you can make your own though!
You can use this without giving credit See inside for info on how to use things like bones and GBS This system uses broadcasts to signal to do certain parts. It is a lot more efficient in my mind