It's always good to see an entry that runs on GB, it looks like you built this in GB Studio. It's a fun concept but it needs some polish. A lot of the art gets kind of lost between the blue and green tones being at such close values. The biggest thing I'd suggest though is going over your collisions. I thought I soft-locked the game after going under the ladder at the Leprechaun's house. On the second try I realized it was just a very narrow gap. Leaving a little extra room makes it more engaging for the player and that helps encourage exploration, especially in a game like this with a lot of little side quests. This could be the start of a fun little game with some improvements.