I'll be putting the things vampires are capable of in a hider in the main post, but other than the typical things, vampires get to enjoy the following powers and possibly a couple others:

Hypnosis (doesn't work if the target is alert; part of why the takeover of Japan didn't go quite as planned)
Converting others into vampires (requires having the vampire-to-be consume a vampire's blood)
[s]Making muscular things appear while screaming "MUDAMUDAMUDAMUDAMUDAMUDAMUDA! ZA WARUDO!"[/s]
Night vision
Turning into a bat (older, more powerful vampires can also turn into a swarm of bats or mist)
Older vampires can also use necromancy to an extent, but it's not easy.

Speaking of old vampires, in addition to my main OC, I'll be dropping in a leader figure; this shall be the oldest - and by effect, strongest - vampire remaining. Do not let your vampire's age exceed 2,100 for this purpose, please.
(I'm only doing so because a group of non-vampire lord runts would have died before even getting to town)