I have secret forces rifle for primary, multitaskers for back up, elder force for melee, frozen dragon for special, one shot for sniper, and circus cannon for heavy
Three category spam is where you swap from 1-2 shot kill weapon after firing it and fire the other 1-2 shot kill weapon and swap to the other one it's called 3 category cuz ppl used to switch from 1-2 shot backup to 1-2 shot special (mainly laser bouncer or reflector) to 1-2 shot kill sniper rifle keep switching and firing til the enemy is dead