a knife, lots of stab wounds, especially ones in the face- most likely a rage kill. After they were done stabbing you, they'd start ripping you limb from limb, even if you were already dead. That, or they'd criticize you, but it'd be so on point that you'd feel bad enough to kill yourself.

It all depends on what is convenient for them to use as a murder weapon- they're clever, so they'd figure it out quickly. Most cannibals are Geminis, so they'd probably eat you afterwards. If you really fucked them over, maybe they'd cut off your hands and watch you bleed to death, probably laughing while doing it.

They'd make a whole sport of it- they'd find a bunch of really sadistic, fucked up people on the black market and put you in a pit filled with big cats (especially lions), you'd here "let the games begin!" and a spotlight would come on the death pit as your torn to shreds.

Similar to the virgo one, but they'd definitely pretend to be distraught by what happened, and mask that they were involved really well...but in order to get you back, they'd get your family, your friends, and other people you cared about to show THEM sympathy, and to be on their side.

beating the shit out of someone until they were literally an unrecognizable bloody mass.

It'd either be something really strange, whacky, and off the wall, like killing someone in the middle of a play by planning to have a stage light dropped on them, or they'd make an example of you in front of a bunch of their "followers" which they'd most likely have if they were crazy enough to kill.