Nocturne93

It's after the Carotos Mountain events, so you can obtain it before the second battle with Keta.

Darchlight Woods at night is the first(and I think only) location you can encounter Murkrow.

I think that's on intense mode. On normal mode(not sure about casual) the move has only 20 PP. The Quick Guard strategy still worked for me in v13. Cursed Body is also an option, but it requires some resetting and luck on your side.

You need two Fletchlings with Quick Guard or Ethers/Revives to revive the defeated Fletchling. Yveltal's move Decimation has 20 PP and Quick Guard has 15 PP.

Jigglypuff evolves with a moon stone, not a link heart. Do you have the event Growlithe/Arcanine from the Terajuma Jungle? It learns Heat Wave and can melt the icy field(Angie's Cold Truth can bring it back though). Try to use a Pokémon with Brick Break to shatter the Aurora Veil her Pokémon like to set up. Rock Slide is an option because many of her Ice types are weak to it, but Crabominable resists it and Beartic knows Liquidation to knock out opposing Rock types. Your best option is probably removing the icy field to power up your own Fire attacks. Also, the icy field turns into a dark dimensional field when melted, so Dark attacks are powered up too.

Do you mean the music in Tesla's villa or the music in the normal houses? The music in Tesla's villa is indeed an Undella Town remix, while the music in the normal houses is the Heahea City night theme from Sun/Moon.

According to the walkthrough, you can't get a Thick Club from mining. However, you can get a Rare Bone from it and the items look sort of similar. I think wild Cubone have a 5% chance to hold a Thick Club, but maybe the devs changed this to nerf Marowak.

You need Strength to access the area where the den is located. You can farm the red essence on Route 4, although it may take some time.

You don't need the key shards anymore. There's a rift den located in the Sheridan Wetlands. You can find Beldum there if you have 15.000 red essence.

-You get the first one from the lady at the department store. -The second one is obtainable by doing the kimono girls quest. -By doing the 'Classified Information' help quest, you get the third one. -Number four is obtainable by beating the virtual league. -You receive the fifth one from Neptune, underwater. -Venus gives sticker number six, after you beat her at Zone Zero. -Finally, sticker number seven is obtainable by doing Narcissa's lengthy side quest.

Sorry, you're right.

Also,

According to Bulbapedia, Tailwind is a normal move in Crobat's moveset in Sword/Shield, but a tutor move in Ultra Sun/Ultra Moon.

At night time.

There's a small chance to find one when mining.

It will be explained later on when you rescue Amber.

You also gain Karma if you rescue Oshawott from the ranger girl.

Stand on the tile with a marked indent on the edge of the cliff. If done right, Emma will call her Togekiss to fly her to the other side.

The Carotos Mountain vendor now sells a Mimikyu.

I'm in Grand Dream City now and I haven't found Meditite at all so far. Does anyone know where you can encounter Meditite in v13?

Wispy Ruins. You need five badges to enter the room where the candle is located.

Starting from the Route 2 entrance, go right to the lower floor. There are two paths you can take: the lower path which leads to the area where Melia 'died' and where you fought the Rift Galvantula and the upper path which leads to a Rock Climb spot. Take the upper path. Use Rock Climb and enter the newly discovered area. You'll notice some weird sounds and you can explore several rooms, one of the rooms contains the moon dial. You'll have to fight a strong foe to obtain it though.

You have to confront Gardevoir; if you go back to the mansion without witnessing the police cutscene no one will be there and the storyline won't progress. I also haven't found the toilet paper, so it looks like the black sludge was pushed back or entirely removed because of balance issues. The only interactable book in the apartment is the weird diary; looks like the other book was removed.

In the Wispy Ruins. Make sure to let Yamask take 49 HP or more damage without fainting. It should evolve afterwards.

I found Boldore in Valor Mountain. Lycanroc appears on Route 9(the route with the theatre), but I haven't found Rockruff as a wild encounter.