Well, let me join the not-so-humble brag, "these bosses people find hard I found easy" party! In fairness to people comparing the Godskin Duo to Orstein & Smough, they're probably objectively harder than the latter but not as impactful in their respective games. Orstein & Smough will make you shit your pants in DS, but compared to a bunch of DS2, BB, DS3 and ER bosses to come after they're now sort of quant (compare any of these guys to Sister Frea and her father or the Demon Princes in The Ringed City and it's no comparison). Whereas if you're prepped for the Duo like Aaz said they're not so bad and you can always put them to sleep or summon Bernie, who can practically solo them if you get good RNG on his healing.
I have much respect for the Duo though since I'm still suffering PTSD from taking them on at RL1 (no-so-humble brag!), and the same for Malekith, who I initially found quite intimidating even though he ultimately didn't take too much effort under regular conditions. Otherwise, I think the variance in people's perceptions of boss difficulty comes down to build, playstyle and matchups; sometimes your build and style is already perfect for beating the boss, and sometimes it's perfect for them beating you.
More RL1 running diary:
4/27
I tried Malekith again after some gear hunting and upgrading last night... easily took him to phase 2! More importantly, I tanked a hit off his second phase, only took me halfway down (I'm using the full life = huge defense boost talisman, so I just can't take two in a row =). Fuck, if I'd proc'd bleed again then he might have croaked from that glitch. I need to consider if there's anything else I need to do/get at the capital before I continue with him and turn that place to ash.
4/29
[Play break to have a son]
5/1
And we're back! I've been using the Radahn's flame Ash of War or whatever to get quick poise breaks and criticals, even on bosses. It's also great for invaders because it fans out so wide it still hits even when they side roll. I have all these cool ash of wars placed on daggers so I can scroll through them for crazy buffs or super attacks. The assassin one that lets you become undetectable is a must and basically how I navigate the world. I did a build like this in DS3 once, basically lets you move freely through each area and sneak kill most enemies. Heck, use the talisman that restores FP with critical attacks and it's self-sustaining. The AI is a lot better than DS3 though; in that one they basically give up once you run away a few yards, as if they perhaps think they got stabbed in the back by a bee, but here they know you're there, they're pissed and they're looking for you (they seem to be able to detect you continually once you're revealed, which makes sense since they're alerted). Though, unlike DS3, I've found it to be semi-effective against field bosses like the various types of Minor Erdtree guardians. Made getting the Cracked Cerulean Tear to summon my Dung Consuming friend much easier.
Speaking of which, I wanted a decent spirit summon to distract enemies but they all die way too fast (the rot hound couldn't even afflict anyone before perishing) and the best ones are all stuck behind tough boss fights, so I recruited a good one that required a lot of legwork but the hurdles weren't too high... THE DUNG EATER! It's quite complicated getting him though, you basically have to almost complete his questline, plus do enough of Seluvis' to give him the potion instead of the curse when he's tied to the chair. Then, viola, you can have him as a puppet summon. He has a few nice benefits too, tanky, his weapon procs bleed, and he debuffs your adversaries increasing damage and proc ability, so a lot of synergies with my bleed build.
5/3
Dung Eater isn't as powerful as I'd hoped, but I still find him quite useful for his status effects, synergies with my build, and as a damage sponge that gets the heat off me. If you're lucky he'll put it all together to do some decent damage too, but it's a bonus. Plus, for lore reasons it's just a funny treat having him as like your teammate.
Me and Dungy just fucked up Loretta so it's on to inner Haligtree! Malenia is next (if I can pull it off at this point)! This run doesn't really have to end either, even if I beat the Elden Beast, or do an ending (straight Elden Lord, bro) it's not like I'm going to rush to NG+. I'll probably try to do everything I possibly can eventually. I've consciously stopped at Maliketh now because I decided I don't want to progress any changes I can't undo, and now I'm just picking off side bosses like the gargoyles and shit. Dungy and I took on two at once and turned em to concrete dust.
You know who's pissing me off though? The Tree Sentinel that guard's the entrance to the inner capital. Had that fucker down to like less than a quarter life on multiple occasions but he can basically one shot me with his lighting call at any time, from anywhere in his second phase. It's not hard to roll away from it, the problem is it's much harder to dodge on horseback when you're going all out and I need the movement speed to keep him from just hammering me in the head, so I end up switching to keep him at range and that's when I'm vulnerable. Plus, the usual Souls shit where you roll into a tree the camera is obscuring so he fries you anyway lol.
5/8
I've taken out most of the shardbearers and optional bosses, of note only Dragonlord, Malenia and the final four remain (Malekith, Godfrey, Radagon and Elden Beast) and I'm not taking them on, or even burning the tree, until I finish all the side quests and bosses I can. I'm actually doing way more of the game in this run than my normal game, which I plan to return to for as many NG+ runs as I desire afterward (probably going to take a break instead, because I'm going to be like 300 hours in by that point). I'll probably do the Frenzied Flame ending there after I complete Elden Lord at RL1.
My dude is currently pretty much equipped for anything, weapons all at +24, two curved swords with frost and bleed, upgraded Longbow with poison arrows, upgraded Pulley Crossbow with bleed bolts, then two daggers, a bleed infused with assassin ash for sneak mode and the other electrified with Golden Vow. I put those on for general moving around and quick kills, switch to the curved swords for big damage, and bows for safety/cheese (I also have a couple of +24 magic Lordsworn Longswords in my inventory for those that don't bleed, freeze, rot, etc). I'm wearing the Omenkiller mask for the strength buff, that bird cape for the jump attack bonus, traveling maiden gloves and pants for the high elemental protection and to make weight. Talismans: Radagon's Soreseal, Ritual Shield, Dragoncrest Shield, and Millicent's Prothesis.
Still having a blast seeing what I can easily take out and what presents major problems. For those remaining bosses I mentioned I may have to abandon all pretense of defense and just go full glass cannon, just buff myself to hell and go HAM to try to kill them in a minute or less (this is how I get Malenia to phase 2, and probably how I'll kill her and Malekith), otherwise, the longer it goes, the more it's inevitable they're going to tag you and you'll be 1-shotted anyway. Once I get some more HP enhancers I'll see if it's possible to use the Mimic summon without a rune and see what sort of awesome customizable summon builds I can do with him. I don't know if he's even viable at RL1 though or if his HP is dependent on mine, severely gimping him in this scenario. I'll find out though.