Pokémon Go Halloween 2023 Part 2 event guide, Halloween Timed Research quest steps
Pokémon Go’s second half of their yearly Halloween event has started, bringing more costumes for Gengar and Pikachu, as well as new Timed Research.
This article references relevant content from the polygon.com website. Original article link: [https://www.polygon.com/pokemon-go-guide/23933337/halloween-part-2-event-timed-research-quest-steps-gengar-pikachu-costumes]

The second half of the Pokémon Go 2023 Halloween event runs from Oct 26-31 and it brings all sorts of costumed Pokémon and candy bonuses.
Notably, Pikachu and Gengar get two new fits, and Zorua can be shiny for the first time. You’ll also get additional candy for catching costumed Pokémon, and for throwing nice, great, and excellent throws. There’s also a chance to get Rare Candy and XL candy when catching costumed Pokémon. Nice.

Alongside this event, the Team Go Rocket leaders and Giovanni have refreshed, adding new “Showdown in the Shadows” research and a new reward for beating Giovanni: Shadow Regigigas.
There’s also a special Timed Research sets that gives you guaranteed encounters with the new costumed Pokémon, which we detail below.
Pokémon Go Halloween Part 2 Timed Research
The following quest is available for all players, and must be completed before the event ends on Tuesday, Oct. 31, at 8 p.m. local time.
Reward: Gengar (Trick and Treats) encounter
Rewards: Zorua encounter, 2,500 Stardust, 5 Rare Candy
Pokémon Go Halloween Part 2 event Field Research and rewards
Spinning PokéStops and gym discs during the event period may give you one of these event-themed Field Research Tasks:
Pokémon Go Halloween Part 2 event spawns
The following will spawn more frequently over the course of the event:

Pokémon Go Halloween Part 2 event raid targets
The following Pokémon will appear in raids for the duration of the event: