Honkai: Star Rail All Stickers in Dreamscape Pass (Version 2.1)

Theme Park Guide: Unlocked by Default

Gaseous Laughter: Unlocked by Default

Best Buddies (I): Take a photo with your companions in the Hamster Ball Knight section of the studio.
Take a picture here and you will get the sticker.

Hamster Speedrun: Explore the Hamster Ball Knight's section in Clock Studios Theme Park. Interact with the floating book near the Young Master Gold.

Limousine Cinema: Explore the open-air theater section in Clock Studios Theme Park.
Interact with the floating book at the main venue (west area) of Clock Studios Theme Park.

"Philanthropist": Find Oksana in the theme park lounge and restore her missing emotions.
Speak with Oksana and use 1 Happy Gear the unlock "Clockwork: Oksana" Adventure Mission and complete it to get this sticker.

Best Buddies (II): Take a photo with your companions in the Brother Hanu section of the studio.
Take a picture on the photo board of Brother Hanu and his gang to get the sticker. Choose the Astral Express family members to get a hidden achievement.

Penacony City Mob: Explore the Brother Hanu section in Clock Studios Theme Park.
Interact with the floating book near the Dream Jigsaw puzzle and Calyx Crimson.

No Open Flames Allowed: Use the Pinball Machine to reach the hidden area in the Brother Hanu section and find the trapped tourists.

3... 2... 1... Action!: Discover the terrifying crime scene near the entrance of the studio theme park.
Interact with the Billboard Investigator and talk to it until the end. Wait for a daily reset and read the message from Billboard Investigator and you will get the sticker. You can find the more detailed guide in the achievement A Variation Named "I" since you will get both sticker and this achievement by the end.

Boss Stone's Quote: Talk with Walter, a local, and discover what he really thinks about his "sworn brothers."
Talk to Walter and change his mood to Angry.

Brother Hanu's Quote: Help Elvira the animation Dreamchaser calm down and face reality.
Talk to Elvira and change her mood to Calm.

Hamster Ball Knight's Quote: Cheer up Neony, the troubled dream bubble artist.
Talk to Neony and change his mood to Happy.

Clockie's Quote: Talk with the "Clockie" at the entrance to the theme park and expose their true identity.
Talk to Clockie and change his mood to Sad.

City Sandpit: Entrance: Unlocked by Default

City Sandpit: Force of Evil: Unlocked by Default

City Sandpit: Foundation: Find Mr. McCoy in the conference room deep inside Dewlight Pavilion and restore his missing emotions.
Speak with Mr. McCoy and use 1 Sad Gear the unlock "Clockwork: Mr. McCoy" Adventure Mission and complete it to get this sticker.

City Sandpit: Booth: Explore the miniature model and find the giant pen laid on the ground.
Go inside the City Sandpit and interact with the floating book.

City Sandpit: Soulglad: Explore the miniature model and reach the elevated platform using the Bubble Pinball Machine.
Near the Bubble Pinball Machine on the top floor (You can reach here by using the Pinball Machine on the ground floor of City Sandpit)

City Sandpit: Advertisement: Explore the miniature model and reach its highest point using the Bubble Pinball Machine.
Near the Formidable Foe. Interact with the floating book. You can reach here by using two Bubble Pinball Machines.

City Sandpit: Drunk "Little" Bird: Yank out the giant origami "birdie" from the miniature model.
Interact with this huge bird and give it the 'finest wine' to get this sticker. You can find the more detailed guide in the achievement Why Is the Origami Bird So Huge? since you will get both sticker and this achievement by the end.

City Sandpit: Building Complex: Find Whisper in the twisted VIP lounge corridor of the hotel in the Dreamscape and restore her missing emotions.
Speak with Whisper and use 1 Angry Gear the unlock "Clockwork: Whisper" Adventure Mission and complete it to get this sticker.

Conclusion of the 3rd Round of Inspection: Failed: Listen to the story between the model attendant and the confessor at Dewlight Pavilion.
Talk to Conna and change her mood to Sad.

Conclusion of the 8th Round of Inspection: Failed: Share gossip with Brina, who's working at the pavilion lobby.
Talk to Brina and change her mood to Happy.

Conclusion of the 11th Round of Inspection: Failed: Learn about the pessimistic side of Leo, head guard at Dewlight Pavilion.
Talk to Leo and change his mood to Sad.

Conclusion of the 20th Round of Inspection: Failed: Provoke the Family guard inside Dewlight Pavilion who claimed to be wearing a "cool mech."
Talk to Hendrick and change his mood to Angry.

Oak: Unlocked by Default

Alfalfa: Unlocked by Default

Nightingale: Unlocked by Default

Bloodhound: Unlocked by Default

Iris: Unlocked by Default

Gopher Wood: Obtain Gopher Wood's Planet of Festivities Collectible Card near the miniature sandpit in Dewlight Pavilion.
Interact with the card on top of the Sandpit Model.

Maeven Ellis: Retrieve Maeven Ellis's Planet of Festivities Collectible Card at a certain statue deep within Dewlight Paviliion.
Interact with the small card on top of a platform inside the octagonal room on the first floor of Dewlight Pavilion.

Hamz: Find the best seat for watching the competition in the Hamster Ball Knight section of the Studios Theme Park.
Interact with the card on top of the long chair, north of the Clock Studios Theme Park.

Mr. Aideen: Obtain Mr. Aideen's Planet of Festivities Collectible Card from Aideen Park.
Interact with the card on top of the bar in Aideen Park (Golden Hour).

Robin: Collect Robin's Planet of Festivities Collectible Card at Clockie Plaza.
Interact with the card on top of the long chair in Clockie Plaza (Golden Hour).

Oti Alfalfa: Obtain Old Oti's Planet of Festivities Collectible Card from Oti Mall.
Interact with the card on top of the table at the open-air cafe in Oti Mall (Golden Hour)

Lesley Dean: Get Lesley Dean's Planet of Festivities Collectible Card from his room after witnessing his story.
Interact with the card on top of a sofa inside a hotel room in The Reverie (Reality).

Bloodhound Family Teachings: Investigate the Bloodhound Family Crest at Dewlight Pavilion.
Go to Dreammaster Hall (F1 of Dewlight Pavilion) and interact with the floating book.

Nightingale Family Teachings: Investigate the Nightingale Family Crest at Dewlight Pavilion.
Go to Dreammaster Hall (F1 of Dewlight Pavilion) and interact with the floating book.

Oak Family Teachings: Investigate the Oak Family Crest at Dewlight Pavilion.
Go to Dreammaster Hall (F1 of Dewlight Pavilion) and interact with the floating book.

Iris Family Teachings: Investigate the Iris Family Crest at Dewlight Pavilion.
Go to Dreammaster Hall (F1 of Dewlight Pavilion) and interact with the floating book.

Alfalfa Family Teachings: Investigate the Alfalfa Family Crest at Dewlight Pavilion.
Go to Dreammaster Hall (F1 of Dewlight Pavilion) and interact with the floating book.