I really don't know how Larian will pull off killing vampire lords, devils and similar creatures before lvl 10.
By the raw power of friendship how else?
Be realistic thank you. A Vampire lord that has lived for hundreds if not say over 1000 years is not some stupid Zombie.
A Vampire Lord is likely not alone and has likely vampire allies or other evil allies nearby.
I do not want to win a Vampire lord by hey there is those 2 explosive barrels one shot there and it will explode.
A Vampire Lord maybe in Act 3, but not Act 2 stuff.