Sure, I can help you with that. Here's a basic implementation of a Metroidvania-style game where you play as an angel protecting a human from demons as they walk towards their destination. This is a simplified version, but it should give you a starting point to build upon:
In this template, you'll need to implement the specific behaviors and visuals for each game object (angel, human, demons) based on your game design. You can add collision detection, animations, scoring, and any other features you desire to enhance the gameplay experience. Good luck with your Metroidvania game!