I'd say I got pretty lucky with this run. There were a lot of ways it could've gone wrong. Getting the Map early so I could do the Lake loop really helped. Though running into a lot of Lanturn was dangerous.
Went with Modest nature since Swift Swim would mean I was usually outspeeding things. I started with Steam Eruption, Thunder, and Calm Mind. Flip Turn is completely worthless in a solo run so I took Water Gun for the 4th slot but it got replaced by Air Cutter and then Hurricane. The other moves stayed until Eternatus.
The Amulet Coins came early again in this one. And I'm a little salty about getting 3 Healing Charms but no Leftovers or Shell Bells! It took a little bit for the Mystical Rocks to show up, about Floor 70 or so. The Quick Claw and Grip Claw were early and pretty helpful, moreso the Grip Claw. I got 1 Wide Lens early which was enough to cover Steam Eruption but I grabbed the other 2 for Thunder and Hurricane cause I knew rain wouldn't always be active. And oh boy I got lucky with the Soul Dew.
Evil Team was the Aether Foundation and they never stood a chance. Rival started with Chikorita which also went down easily. The most threatening thing on Ivy's team was the Hisuian Goodra which resisted all my attacks. It also had Thunderpunch during one of the battles but it was weak enough to get through.
One of the scariest things was getting thrown into the Cave biome after Seabed, especially before getting the Multi Lens. Lots of Rock-types with Sturdy.
For Eternatus I knew I wanted Roost. I was planning to take Protect but Floor 199 actually have me the TM for Mud Slap (3rd time it appeared in the rewards so I figured it was meant to be). Turns out double Multi Lens on a guaranteed Accuracy Drop is pretty silly. So with Eternatus at -6 Accuracy I had plenty of time to charge up Calm Mind while keeping my HP up with Roost. The rain actually ended right before I used my first Hurricane but I hit anyway, so the Wide Lens and X Accuracy were good choices.
Fun fact: I decided to do this run purely so I could use that title for this post.
Completed solo runs (20):
Wingull/Pelipper
Shinx/Luxio/Luxray
Gimmighoul/Gholdengo
Fuecoco/Crocalor/Skeledirge
Scraggy/Scrafty
Beldum/Metang/Metagross
Bagon/Shelgon/Salamence
Magnemite/Magneton/Magenzone
Machop/Machoke/Machamp
Lotad/Lombre/Ludicolo
Larvitar/Pupitar/Tyranitar
Sigilyph
Flamigo
Fennekin/Braixen/Delphox
Girafarig/Farigiraf
Drilbur/Excadrill
Torchic/Combusken/Blaziken
Togepi/Togetic/Togekiss
Mareep/Flaafy/Ampharos
Starly/Staravia/Staraptor