It would be interesting if there was a "shield" implemented so that the user can block any incoming bullets, but not be able to shoot while the shield is active. This shield could have a limit where it can only absorb so many bullets before breaking (if true then the shield's "health" should appear on screen). The user can acquire this shield by running into it (like a powerup) and can hold on to it until the user wants to use it (thus pressing a certain key to activate it).
It would be interesting if there was a "shield" implemented so that the user can block any incoming bullets, but not be able to shoot while the shield is active. This shield could have a limit where it can only absorb so many bullets before breaking (if true then the shield's "health" should appear on screen). The user can acquire this shield by running into it (like a powerup) and can hold on to it until the user wants to use it (thus pressing a certain key to activate it).