He can be posioned with arrows and cannout hit you if you snipe from behind the rolling statue head. There is enough tine to finish him to especially if you have secondary lightning/fire arrows to fire off while he is inflicted with poison. Keep him poisoned and keep firing. Zero damage taken.

as you enter memory of jeigh, trigger the statue's head to fall then back up onto the ledge. once it stops rolling just sprint past and head to the boss. you can easily win the fight by going left on the platform and backing up all the way to the patch of fire while sticking to the wall. once you're there, use ranged attacks or spells: he'll only use his sword swing and frontal slam to attack, which are easily dodged by rolling aside. i farmed him up to +12 and I'm still going. i recommend using hexes with a +5 dark enchanted sunset staff and equipping all tseldora set to get max amount of souls.

so we CAN block ***** like the old iron king's arm sweeps and fireballs and stuff, but we CANNOT block ANY ATTACK made by a giant...

"Because f*ck you, that's why"

What ring do i need to travel to the memory of jeigh darksouls wiki is never verry clear about what you need and where it actually is

I find this to be very weird. I farmed for souls by fighting the Giant Lord constantly (I'm up to NG+ 21), and it seems that when the difficulty in the Memory of Jeigh increases, the difficulty in ALL other giant memories increases. Enemies are able to easily one-shot me, which I've never seen before.

Can anyone else confirm this?

Just so everyone knows summoning Benhart or Drummond will decrease the damage you inflict on the Giant Lord along with the sounds you receive from deafeating him. It took me a while to work this out and I got annoyed thinking about all the souls I missed out on :(

Keeping just to the outside of his feet is key. You will bait the stomp attack every time.

he looks like yhorm, is that yhorm?

You forgot to add to the drops list the "Ring of the Giants +2" at bonfire intensity 2 and higher.