These tutorials are so helpful. I started with what I'd made with these tutorials, then I knew how to add some other stuff by myself (such as my own powerups + powerups "engine", difficulty settings, etc)
With my bullets they simply pass through the enemies, which die after about 2 seconds. Anyone know what's happening? Btw when I crash my ship into them that still works.
If the missiles aren't moving you need to check everything in your Missile.as file, and you need to check the missile symbol is registered as a Missile.