My setup is this:
Shako (I use 1.07 version, but normal one is almost as good)
Enigma
Mara's
HotO
Spirit Sacred Targe (mine is 35@ base, use a high res good block base if you can)
Trang Oul's gloves (Magefist works too)
Arachnid's Mesh
Hotspurs (another option could be Waterwalk's)
BKWB
10 FCR ++ ring (res, dex, life are nice adds)
Switch: CtA + Spirit
Inventory: PC skillers, res/life small charms, add maybe a Gheed's. I don't use it though
Mercenary is a lazy man's Insight A2 Combat merc with Gladiator's Bane and Gaze. There are another options too, for example some ppl play with Lawbringer A3/5 merc or equip their A2 mercs with Reaper's or Doom. I use Mediation sometimes but Insight is just too comfortable
Any tips? Hmm, 125 fcr is nice, max block for sure and stacked fire res is good versus Conviction. I think the only real threat in the CS for Hammerdin is a nasty De Seis pack (or a real bad unique combo). I have my finger on a rejuv hotkey every time I tele on De Seis. I kill all the boss packs in CS and RoF.
If you get serious about leveling, you can try to get a map with as much shrines as possible.
That's about it.
You'll probably find tons of info/videos after some search but I'll answer any questions you might have, if I can!