Looks dope! Worth the buy.
It is one of the few tilesets that is hand made (can see no bleeding colors) and does emulate good old snes style, especially Megaman X series/Super Metroid where you have virtually 0 competition so far on itch.io.
Quality also checks out, colors and shapes are distinct and look professional, so here well done. So what can you do in the future as feedback? More :D, I buy them all. Add more variety aka different biomes. Will feature them next month on my small yt channel, so a few extra eyes on your art should be nice.