Why did you use GameMaker? I mean there is Construct and GDevelop at the moment, and they both have an easier learning curve than GameMaker for sure.
Viewing post in Rings of Titeia - Demo v0.3 [18+] comments
There are a lot of options now that can make you dizzy! I'm using Wick Editor at the moment, it's good enough for a small project, but for a full 2D game, I think Kaplay.js (formerly Kaboom.js) or Melon.js will be more than enough.
My art isn't as interesting as yours, and that's something I'll be working on. Cheers!