Hi, So the game jam has begone!
We think of an Arcade mode with more enemies and stuff like that (there is also a black hole that just attract the ship).
We are now implementing art and music in the game. 
This is not much, but now we know how to do it. And as you can see, we are also working on light effects, that are really tricky to make with construct2, but we love the engine and our lights effects are ok, so we won’t change.
We are now thinking on new arcade things and art/animations and sound design.
There is a lot of work left to be done, but we have coffee !