RNG means random number generated (commonly used in games). So he meant heβll fire randomly so the clown canβt read his attacks.
Also from the intro, it seems you drink potions to advance to the next sequence. Maybe thatβs what he meant by βClown potionβ
Also the director said these 3 episodes were very fast paced in order to meet a certain point in the story from the source material under their contract. So weβll see if it gets less confusing later lol