My walls (I mention three bosses which might be considered spoilers)

[Slayer]

Once I learned to Perfect Guard, which I practiced like mad on the test dummies at the hotel, most of the boss fights in the game were manageable and gave me little to no hassle. BUT my walls, as in bosses that I was stuck at for a long time were:

Fallen Archbishop Andreus: My first wall and where I learned to really nail those perfect guards.

Luxasia: Seemed impossible until I learned to Perfect Gard her ariel attacks and the timing for her dash attacks in phase 2.

Simon Manus, Awakened God: Was difficult until I just learned to chill and normal guard through his attacks. Putting points into getting more guard health back helps and the consumable that increases resistances.

Which bosses were your walls?

I absolutely love Lies of P and think the combat is so refreshing compared to most other Souls-likes and some souls games. It was like a more aggressive Bloodborne meets Sekiro. I had speced into chain dodging but then dropped it because I just didn't need it, I either blocked or perfect guarded all fights. I'm just about to take on NG+ but I'm farming Ergo to stock up on consumables and throwables before I start.

[Rubyeyed]

I struggled a bit at those points too but I found out some methods to do those bosses more easily.

For the archbishop I don't engage his side at all, I just stay with the monster side. Bishop is too high for clear visibility and he goes apes**t too often.

Biggest revelation for Lux was the ability to deflect the electricity back at her. Honestly I wouldn't have thought of that myself. It is kind of illogical but it is a game after all so I guess it makes sense.

For Simon I don't really have any strategy aside from dumping throwables at him to deal some extra damage in second phase. Breaking his weapon only makes some of his moves deal less damage, pretty underwhelming and it takes a million hits for that thing to break. Camera is pretty whack during this fight which doesn't help.

Nameless Puppet made me angry though because of his crouching red attack, there is no indicator on that bs when to start blocking. You have to guess it. I thought maybe that lightning on his weapons was the signal but it isn't. That other red with 100% tracking long slash is also pretty annoying because you have to be close to parry it but at least you know when.

Putting bosses aside for a second, you know this one fight with the illusionist? That fight is cancer. I only managed to kill her because I did it before she made a copy so I guess I won the dps check because those illusions are tanky af + if you break her weapon the illusion's weapons aren't broken soooo nice illusions I guess. Honestly, when she makes an illusion and both of them go apes**t at the same time it's over. I died there easily over 10 times before I finally managed.

[The Royal Pain]

Black Rabbits and the Green Monster. In hindsight, the Green Monster's kinda tame, but I was so burned out on two-phases and rattled by combining Anor Londo Rooftops (the artillery) with Miyazaki's swamp fetish (the decay) that I totally got upended by it until I figured things out over a few tries.

The Black Rabbits on the other hand? Oh boy if you'd been on my shoulder when I was banging my head into them. It was when I was still holding onto my consumables for dear life, and even when I tried to use them my brain was so overloaded that I just assumed they were doing nothing. By the time I was done I just turned the game off and went to play something chill because I was fitting to explode if I'd gotten poked by anything else stressful.

[therealbaka]

Manus, he has some cycle where he just =>
- do the spin atk + crush atk
- do the kick
- do the waves (and i can't find the perfect guard on those)
- call god hand
- repeat

And you can barely do a normal attack in between those.

But i beat it with just cheesing the "god hand" phase with consumables. Which is not a sign of good design.

[Slayer]

I managed to beat Manus without consumables. Using the watchman baton handle buff, I'd do charged R2s, which with that combo throws them out fast.