First and second image:

I created a code where the high score is saved, unlike before when only the last round's score was recorded.

Third and fourth image:

Projectiles no longer despawn incorrectly. The bug has been fixed. 

I hope I’ve fixed this bug now. Let me know if it still doesn’t work!

Got Any Ideas?:

If you have any suggestions for features I should add to my game, feel free to leave them in the comments!