Started a SL1 run today and I've been playing all day. It's not too tough so far - I can usually make a couple of mistakes before death and healing grass is plentiful.
Phalanx, Adjucator, Fool's Idol, Armor Spider, and Flamelurker down so far. I beat Flamelurker melee only (crescent falchion +3). That was a really fun fight. I'm kind of keeping a death log. So far I've died a few times to the skeletons in 4-1, once to adjucator, once to the dogs in 2-1, once to the first reaper in 4-2, once when I haphazardly ran into two mindflayers, once on the baby nail black phantom, a couple of times to fool's idol (kind of embarrassing), 3 times taking the shortcut in 2-2, and once to flamelurker. So I'm dying a lot, but not even necessarily from the limitations of SL1. Just making stupid mistakes. I love how both Souls games seem made with low level runs in mind. Magic is so strong in this game that even unupgraded a Soul Spear (SoulLight in the chinese copy I'm playing) is still really useful. I'm mostly melee though. Took down Armored Spider with soul spears because i hate fighting that boss melee. Guess I will do 2-2 proper now and get the dragon longsword. Now onto the tougher parts of the game...
EDIT: Ok now I'm getting my ass kicked by Maneater. That's more like it.
EDIT 2: beat Maneater. finally. Via Dragon Long Sword +4.