Cool concept, tho only having one possibility of a god per life restricts gameplay quite a bit.
Some (I hope) constructive notes (most of it is if you had more time) :
- A pool of health maybe would have been more enjoyable
- Sometimes the screen stayed red for some reason
- Missing some SFX and feedback for hitting
- I'm in love with the triangles faces
- As you said restart doesn't work, try to not link code to something that can't despawn ;) (hook it to the root node of the scene or make it an autoload game manager)
You are thinking about making a fully fleshed out game as you say on the game's page. If you find it fun, go for it. But maybe you could learn more engine and code knowledge by experimenting on very small projects like this one first ?
Good job on this submission !