There are 9 pieces of Silver Wolf-inspired Graffiti to find as part of Honkai Star Rail’s new Starhunt Game events. Here’s how to complete the Hidden Codes part of the Arcade Challenge:
As part of the Honkai Star Rail V1.1 update, Silver Wolf has infiltrated the Herta Space Station, leaving coded Graffiti all around 3 major areas of the map
Here’s where to find each tag in Volumes One, Two, and Three of the Hidden Codes section of the Starhunt Game event.
Where to Find All Hidden Codes Graffiti – Honkai Star Rail
Here’s where to find each of the Hidden Codes Graffiti tags in each Volume of Honkai Star Rail’s Starhunt Game event:
Volume One
In Volume One, players need to search the Herta Space Station’s Base Zone to find the following tags:

Graffiti 1: On the Floor Downstairs
The Hacking Callcard Graffiti is located on the floor in the southeast corner of the room, without heading up any stairs.

Graffiti 2: Behind Reception
The Bitmap Explosion Graffiti is waiting behind the reception desk beside Wen Mingde.

Graffiti 3: On the Wall Upstairs
Head upstairs to the second level and you’ll find the Level 999 Graffiti waiting on the wall to the southwest.

Volume Two
In Volume Two, Honkai Star Rail players must explore the Supply Zone to find these Graffiti tags. This volume will only unlock after completing the Punklorde Mentality story mission.

Graffiti 1: Beside the Control Room Door
The Level 999 Graffiti is found next to the door to the Control Room.

Graffiti 2: On the Wall Near the Astral Express
On the ramp leading up to the Astral Express, players can find the Bitmap Explosion Graffiti waiting on one of the walls.

Graffiti 3: Beside the Echo of War
Immediately beside the Echo of War: Destruction’s Beginning, players can find the Hacking Callcard Graffiti resting on the wall.

Volume 3
Finally, Volume 3 of Hidden Codes tasks players with finding the 3 final Graffiti tags in the Storage Zone. This volume will only unlock after completing the Punklorde Mentality story mission.

Graffiti 1: Gallery of Shadows Floor
The Hacking Callcard Graffiti is on the floor of the Gallery of Shadows, the small room to the southeast of the Storage Zone on the first floor where your Honkai Star Rail adventure first began.

Graffiti 2: Gallery of Shadows Long Room
Immediately through the door from the first Graffiti, the Bitmap Explosion tag is waiting on the floor to your left-hand side.

Graffiti 3: Curio Collection Room Wall
Heading out of the Gallery of Shadows and along the corridor, you’ll come to the opposing room on the first floor, the Curio Collection Room. There, the Level 999 Graffiti spray is located on the right-hand wall.

Each piece of Graffiti you find will allow you to claim 20 Stellar Jade and 20 Always Smiling (used to purchase items in the Starhunt Game Store). Simply open the Starhunt Game Arcade Challenge menu to claim your reward.
Finding all 9 Hidden Codes Graffiti will therefore pay out a total of 180 Stellar Jade and 180 Always Smiling.