Amazing!! As you, the 8-bit adventure series are my all the time favorite games and I have plans to make a game following the same concept. It still on the paper, but the design is almost done. I bought Aseprite and was studing some framework to use (I was probably going to Visionaire, but I will take a look in GMS2).
By the way, I had contatc with Dave Marsh, one of the Shadowagte & Cia co-creators. I remember of mention you and your game Infested to him sometime ago and he seems to had a very good impression of the game screens.
