You can suggest ideas btw.

The ball hitting everything but the blue one:

Add a sussy ball

Add Boss Battle that dashes like 7 times on random direction and charges laser in 2 seconds when the laser is hitted by ball it reflects to the boss and the boss has 10 lives and the other NPCs doesn't spawn only boss When the boss is hitted by balls when dashing and charging it won't work wait for 3 second if it is hitted by laser or not it dashes again. (Rate 1 to 5 decimal includes)

Add a very strong exploding ball that it kills all characters

Highest kill before the game lagged