I'm trying to learn how to make melee builds (would like to use one as my first char in delve), and would appreciate some feedback on what I am doing wrong from better players, if anyone would like to help, here is PoB build for my attempt at a phys Slayer:
https://pastebin.com/6pXTAmni
Just some quick thoughts:
You definietely want Vaal Pact for Slayer.
You definitely want to pick up crit nodes next to Resolute Technique. They're stronger than the staff nodes you are getting far up.
At the start you take a 3% attk speed over 12% dmg, then take 10% dmg over 3% attk speed :D
I don't think Romira's ring is worth it. You can get charges from a Blue Dream jewel (~30 chaos I think) or Assassin's Mark.
For gloves you will want to use Tombfist, they can't be beat for attack builds really, 1 socket is very cheap.
For armour either Belly of the Beast (defence) or Carcass Jack (offense). Both are cheap.
You want Maim on totem or linked to Vengeance (or both). Replace it in main link with Ruthless/Multistrike.
As for totem, maybe you just did it hastily, but use Warchief, not Protector. Protector is stronger, but Warchief is AoE, which is a lot more practical.
You can still use a curse, Vulnerability is best, Assassin's Mark is another option. If you end up using the Marylene amulet (it's not terrible actually, I'm surprised) which is dirt cheap, corrupting it for +1 curse should be achievable.
There is no reason to not use Blood Rage as A Slayer.
On a more general note, you might want to try to also make a non-Brutality version in PoB, unless you're dead set on pure phys. Melee builds benefit very strongly from stuff like Atziri's Promse, Unholy Might, Hatred, etc.