That's quite the puzzle! I like the little messages on the bottom helping you on the right direction, and the accessibility for color blind people. Great job! Thanks for participating in Week Sauce one more time!
Ah! That's the beauty of pixel art games. You make them at tiny resolutions, so they don't occupy a lot of memory and they are "easier" to draw. Then you zoom in, render the game bigger. For example, check out this game made with those assets: https://prelorder.itch.io/dungeon-deepest-treasure
Makes sense?