Fast paced retro game straight out of the arcade, I love it :)
Shooting is implemented perfectly, I especially liked the effect of a loaded weapon. But the control of the ship at high speed is not very responsive because of this, it is sometimes quite difficult to control the movement.
After a few attempts, I thought, why should I move at all? And I just stood still and fired at the enemies. Perhaps it makes sense to add some enemies that would shoot at the player in order to motivate him to move, and not stand still.
The sound effects are well chosen, but I missed some background music, it would give the game an extra atmosphere.
In general, I really liked it, my best result is 36800 points :D
Great job!
By the way, great particle systems :)