Nice, very Gameboy-like indeed!
The graphics, features, enemy AI and amount of things you added in this is very impressive! Especially in just 10 days!
Although the enemy AI takes quite slow to do it's move, unless that's how it worked in the game you were inspired by as seen in some comments but idk I actually never owned a game boy lol (pls no bully)
Overall, it's a very impressive submission!