boast about his Force Sense power while getting assassinated while mind probing his would-be killer
__________________
They are angry because they have been forced to recognize that their hour has arrived; that the time has come to surrender power to Shimrra and the new order."
Everything new we see Kylo do (freeze the blaster bolt, mind probe people, make people fall asleep, freeze people, so on) he learned from Snoke.
Also Snoke has psionic powers. He can influence the minds of others, and apparently it was he that made Luke Skywalker isolate himself and feel like dying through mind-manipulation. Which is why Skywalker clearly doesn't REALLY believe that, as is obvious in the film.
And he also fought off the "dark things" in the Unknown Regions, which is basically the "boogieman" of star wars the authors are now using as an unknown to explain unexplainable things and move the plot along.
__________________ RealistRacism: "Sheevites, much like the Banites, were meant to increase in power with each member. From Lightsnake to Gideon to Azronger, this was supposed to be the case. However, knowledge must've been lost in some kind of Gravid-like incident, as Az turned out to be a mid-tier debater with a sub-par track record, sh!itting all over Tempest's legacy. Sad."