Suppression, 15

Topic switcheroo, changing the subject to evade accountability or refutation of their views: rerouting any topic related to their misdeeds, accountability, status quo, or indefensible but indispensable views, to others that, no matter how out of context from the original discussion, under the pretext of appear just as valid involve others as the accused and them as the accusers.
Covert and overt threats and blackmail: seeing any failing to measure up to their excessive sense of entitlement, superiority and demands as a threat, meeting it in terms of ultimatum instead of harmonization, threatening others with retaliations if they do not comply as their common behaviour.
Name−calling and turning up the volume: verbally abusing, thus humiliating from the outside or hollowing out from the inside the others’ trust in themselves, qualitatively by insulting, quantitatively by raising the voice, as the easier way to fight the others’ expressions of existence and of an independent viewpoint, perceived as a threat of their exclusive entitlement to both.
Love−bombing and devaluation: first seducing the victim into their honey trap by excessive admiration and idealization, and then, just as fiercely, devaluing and vilifying exactly what they first admired and idealized, sometimes slandering the victim’s forerunners or those the narcissist perceives as rivals, and then slandering the victim in the aftermath.
Destructive conditioning: contaminating the good in people and their lives with something bad or painful, whether for instance by idealizing first and then putting down their qualities just as in love−bombing, or by sabotaging their aims or events, to condition them to stay away from that good and from any possible interference in devoting themselves to please them.
Smear campaigns and stalking: slandering others, if not even instigate them against each other, while abusing them, to provoke reactions they can use to play the victim and accuse them of their own misdeeds much like in projection, to control them by destroying their reputation and burning their bridges.