Howdy! I just published my first video game, and first GameMaker Studio 2 project - a Castlevania-inspired action platformer. https://copilotlindy.itch.io/castleviolence
I'd say it's average/hard level difficulty if you're used to NES/SNES games. It's only 5 levels long, but I wanted to keep it short since the scope creep was real. Try it out and let me know what you think!