giant ornstein has 2 good opening moves where you can hit him.
one is right after he does he lunge attack (dodge it cause i believe it does lightning damage, but after he does it if you're close enough you can get 1 swing in)
the other is when he does his butt slam, dodge his slam and the aoe that follows then go in and get 1-2 swings in

I had the same, had difficulty with killing Ornstein as last boss.. Finally beat them few days ago.
Ornstein armor is good, his weap is dissapointing =/

his armor offers nice poise and i believe has a nice weight as well as defense.
and yea, his weapon isn't that great, but you'll need it for the plat.

Use those pillars and circle the room. Try to get the attacks to hit the pillars instead.

this
i fucked him up with the pillars help
e: like he destroys them and has some range thorugh them but he gets stuck on the bottom part just stand behind one a lil bit n u wont get hit then when hes vulnerable just g owhack him a few times

This post was edited by dragoneth on Nov 15 2011 07:19am

Didn't bother with upgrading it. I went and made a +5 lighting laito.

Nope. You have to kill him yourself. Helping someone just gets you the souls. If you're a sunbro you get a sunlight medal too. But no soul