Now this is a cool game. It reminded me of vampire survivor. I like what you are doing with the Godot engine. I had a great time leveling up and wanted to keep going. I would say the skill factor is pretty fair. I would suggest adding some music and to have the power up tokens different colors per the enemies that spawn them. I liked the power up system of food, armor and getting stronger attack and bullets. Sounds effects would go a long way.