Is Validar the only non playable character with critical cutscene?
Also, i'd really love it if Grima's Truth was obtainable. It looks pretty normal as a Dark Tome to me, unlike the Blighted Claw or etc weapons that are exclusive to enemy classes
Yes, he is. Even Excellus and Cervantes don't have.
Grima's Truth is sad. I was expecting something very powerful from a tome that channels the power of a dragon (look at Loptyr and Book of Naga, for example.) But this tome is actually weaker than Goetia, and it's animation is very similar to Goetia, too.
If you're reading this, CONGRATULATIONS!! You're wasting your time!!