the only reason I'm not outright quitting the game right now is because of this thread, I'd feel like I failed you guys that have been helping me lol. Tried again, no chance, I have no idea what to do at all, my bloodstain at the boss must have like 100k souls by now lol :(
I had a ton of trouble with those guys, too. My advice would be to summon someone to help you. That fight is tons easier if they have multiple targets to focus on.
If you're dead-set on doing it solo, apparently you can isolate Ornstein (spear guy) by immediately running to either corner of the area then playing keep-away from Smough by keeping a pillar between him and you at all times.
Smough is weak to lightning (in both forms) and pretty easy to manage if you stay up in his face. Just remember to run away from his AOE butt-slam.
Ornstein is fairly easy all-around as long as Fatty isn't up in your grill at the same time.