Having completed the game two nights ago... (which i certainly didn't think i would be able to do when I first started), some lists...
Favorite Areas:
Anor Londo. Really beautiful. The enemies seemed overwhelmingly tough at first. I felt very triumphant when I beat the archers, got to the blacksmith, beat the boss. After spending so long in the other areas of the game, to be whisked away to a giant area on the other side of everything..that was really cool.
Sens Fortress. Loved the traps and overall design of this place. Using the traps to kill the man-serpents was very satisfying. I missed out on the lightning spear here (mimic killed me at the same time I killed it), which was incredibly frustrating at the time until I manned up and made my own lightning weapon which is better anyway.
Undead Burg/Parish. Great first real area of the game, just wonderful level design. Spent a lot of time here learning the ropes.
Demons Ruins. It gets a lot of hate but I liked it. I'm in hell or something so sure, throw a bunch of demons my way on a bed of cooled lava. I liked how many bosses there were here and killing the taurus/capra demons.
Stepping out to firelink shrine for the first time, knowing you have multiple paths to choose from, was something special. definitely had more of an impact on me than the hub in demons souls.
Least favorite:
Tomb of Giants. Fuck those skeleton dogs. This area wasn't much fun even when I got the hang of it.
Blighttown. Mainly because of the frame rate...which is absolutely terrible. I also never got the ring that lets me walk at normal speed in the swamp so fuck that. Also too dark.
New Londo. Too dark, ghosts don't give you any souls and aren't satisfying to fight.
Favorite Bosses:
Ornstein + Smough! It was very difficult for me but I really loved this fight.
Gaping Dragon - one of the few that I did with people in co-op, so it's memorable. Plus beating it let me leave the depths, and it was a fun fight.
Demon Firesage. I was ready to take this guy on, his cousin destroyed me earlier and it felt good to be confident about the fight.
Capra Demon.
Noteable moments / crushing defeats:
-Traversing the depths knowing that these frogs can insta-kill me and make me spawn with half my HP was nerve-wracking. Made a wrong turn, got cursed, took a while for me to get cured, manned up enough to go back into the depths.. and it happened again. Also, going through the depths with other people made me realize how special the co-op in this game really is. if only it worked more consistently!
- I lost to the final boss more times than I can count... and in many of these attempts, I got him to a fucking sliver of health (no red even showing) when he killed me. The most crushing of these defeats was when I was absolutely fucking determined I was going to beat this asshole. I used all of my humanity I had in stock (maybe 4 or 5), got him down to NOTHING.. and died. noooo! When I finally beat him, hours later, I used maybe 3 estus flasks, and the last one was just a precaution. I'm glad the black knights drop a shield that you can parry with that blocks 95% of fire damage
because my eagle shield was making the fight way harder.