Yeah, balancing is an issue, was hard to figure out a solution
great idea, maybe if i update it someday
there is like 4 perks (technically 6 but 1 just gives a score, the other a bigger amount of score):
- blue grants shield
- purple grants an extra hex to shoot (yes the bullets are called hexes :P )
- orange grants frenzy (no fire rate for 5 seconds)
- green grants an extra fire point