Boss JL Cyborg disables Sp2, so I can't use my conventional method and one shot him, and I can't use Deathstroke on him either. Have to slowly grind him out with my spare pips. Among the tier 5 bosses, he is moderately painful, slightly tanky, but AI is stupid and predictable. I am generally a FREE TO PLAY player, so I don't own powerful artifacts like beta club, sword of sin & salvation. I work with whatever that is given free.