I've included details about each fight/Verse in the description, please read for more details:
Hooray, another chapter where we can fling ourselves into pits to maximize damage taken outside of Verses. :V
Verse 1: Nothing special, just don't smack the flaming enemies and don't let the angels use a sousaphone spin to kill off their friends and rob you of a Plat combo.
Verse 2: Gaze of Despair stops enemies from targeting your body. Hide your body in the corner, and then it's a pretty normal fight. I used the whip for fun here to show it off.
Verse 3: Visibility's a bit annoying here, but the enemies are pretty standard.
Verse 4: Do NOT use crow feathers here or it'll slow you down so much that you get caught and murdered. I do PKPs with panther offset to blast rockets into the enemies on my way down.
Verse 5: Activate both the Gracious and Glorious, then use feathers to combo them. I actually thought I botched this attempt when I dropped the combo here, phew. If you fight each enemy one by one you might not get Platinum combo, so break multiple chests open to get two enemies active at once before fighting them.
Verse 6: Kinships are legitimately annoying due to how their missiles rush you down. I had a restart or two on them. Use Scarborough Fair or Bazillions on one slot to be able to shoot them down while dodging for best results.
Verse 7: The hardest part of this Verse is being forced to start with an empty magic meter. Kilgore blasts are very effective but I think Shuraba PKP or shotgun blasts may also work and get you a Plat combo here.
Verse 8: The Joys attack without mercy the moment you land making it very tricky to avoid taking damage. If you activate Pulley's before dropping down it helps. A very difficult fight due to how small the arena is, possibly the hardest of the chapter along with the Kinships. I resort to sousaphone spins to wipe them when they get a bit out of hand.
Verse 9: You have to be exceptionally fast here. The time limit is super strict on this Verse, and any dawdling will get you a Gold time.
Verse 10: Golem's a meanie. Feather spins in his face are great if you have magic to burn.
Verse 11: You have a total of 110 attacks to finish this fight and it took me under half that. :V
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This Bayonetta playthrough features the secret character "Little King Zero", who is unlockable by clearing the bonus chapter "Lost Chapter: Angel Slayer". Little King Zero is the hardest character in the game to get Pure Platinums due to his innately equipped Infernal Communicator interfering with the use of both Pulley's Butterfly and Sergey's Lover. His minor advantage of very slightly faster running speed and slightly improved magic gain per hit (mostly noticeable when using Scarborough Fair, Handguns, or Bazillions) do not make up for these disadvantages.
This playthrough gets a Pure Platinum (no damage taken in combat, Platinum rank time and combo on every fight) on each chapter while showcasing all the cutscenes as Little King Zero, without ever resorting to the checkpoint restart exploit. Most playthroughs on KZfaq resort to this exploit, where you can immediately pause the game, select Quit to Title Screen, and then Continue to restart any fight where you get hit, or if you're worried your combo score or time are too low to get Platinum. It's easy to spot the jump cuts in Pure Platinum runs where players resort to this exploit before difficult fights. It's especially weird when they deliberately avoid the use of specific weapons or accessories (usually Pulley's Butterfly) in order to look hardcore, but then resort to this incredibly abusable exploit to get their Pure Platinums, which essentially removes most of the stress or tension from having to avoid taking damage while nailing combo scores and time in each fight.
If you can just restart any fight you fail, rather than having to restart the entire chapter, it's far less challenging to Pure Platinum the entire chapter. All it takes is to retry the fight over and over until you get through it without taking damage (and hopefully get Platinum combo score and time) then use video editing to cut out the failed attempts. The people who use this exploit to get Pure Platinums often won't mention it explicitly in their video description, and you have to figure it out yourself based on the presence of jump cuts in the chapter. The worst part is this exploit is useless for teaching you consistent combat strategies. Lost Chapter: Angel Slayer doesn't allow for mid-chapter restarts, hence why players who resort to this exploit to get their medal screens full of Pure Platinums tend to have trouble with this endurance chapter. The only other player I know of who has recorded a Pure Platinum playthrough of NSIC without using the Continue Exploit is a highly skilled Japanese player by the name of "tomatyesc", who also has multiple recorded Pure Platinum runs of Lost Chapter: Angel Slayer: / tomatyesc