It has most of the old 1.6.4 mod. Several powers had to be disabled whilst they get recoded, and in the 1.12.2 version Time Stop has been disabled as well until I can get that fixed. For clarity Vampires don't have anything special other than the boosts. Hamon is not available at all. Echoes is just an egg. Every stand besides Echoes has a basic attack, Emperor is just an infinite bow at this point, doesnt track in 1.12 but does in 1.7. The Hand has the most abilities, Magicians Red causes fire, Crazy Diamond can heal and make blocks do a "jump".
That pretty much covers all of what you might need to know I think. Besides the controls. V for summoning, then punch and sprint+punch are options. Sneak+Jump has different uses and then its pretty much a mix between all of them. Have Fun!
That doesn't do me any good I'm afraid. That is saying that you don't have the main file of the mod in your install. Something's gone wrong on your end to have caused that. Hopefully you downloaded from curse forge and not a reupload anywhere else but that shouldnt have happened at all. If you can provide a full crash log it might shed more light into this.