It's a cool game. The loading screen looks like you're using Godot, am I right?
If yes, I have a couple of tips for you.
- There is a thing called one-way-collision. You can activate it in the CollisionShape2D (Not the StaticBody) and set the direction. This way you can jump through a life but don't fall through it
- In the project settings at Display/Windows/Stretch you can set the mode to 2D and the aspect to keep or expand and the game grows with the window size
- There is a newer version of godot, if you're using godot it's not the latest version. I think you're using 3.2 but 3.3 is already released