I like the art :)
what happens is that event 3 fires a red HWB, and event 9 fires a gold HWB (if the highscore is over 80).
if the highscore is over 80, both are fired, but you make the red one invisible, and the gold one visible (down in event 26).
both projectiles will hit the enemy, so both events 10 and 11 will run. Since the gold projectile is slightly faster, it will hit first and then the red one hits and changes the animation to f1 (red HWB) right after the it had been set to the f4 (gold HWB). If they hit at the same time, then the f4 animation is set last so you will see the f4 animation.
so, you don't want to fire the red HWB if you are going to fire the gold one.
or you might want to make the gold one a new animation of the red HWB, and then set speed as necessary. That would remove duplicate code...
there may be a bug with the end of game not always stopping play, but I didn't look into that.