The Sun Ending in Cyberpunk 2077 is something between a good and a sad ending. To achieve it, you need to complete the side missions involving Panam, namely "Chippin' In" and "Blistering Love." Make sure you have finished all of them before reaching the point of no return. For information about other endings in Cyberpunk 2077, read here.

After that, you should choose the following: join forces with Panam and take the pseudoendotrizine to proceed to the second part of the finale. Once you enter cyberspace, you only need to make a choice (read below). And now, SPOILERS!!!!

Main condition for the ending: have a strong relationship with Johnny.
Achievement: The Sun.

Here's a brief guide on how to get The Sun ending in Cyberpunk 2077:
 Complete the "Chippin' In" mission.
 Complete the "Blistering Love" mission.
 Choose the dialogue option "I think you and Panam should leave."

Detailed Actions

1. Ask for help from Panam.
2. Conversation between Alt and Vicks.
3. Weyland, Panam, and you head to the Arasaka Tower.
4. The satellite will be successfully deactivated thanks to Alt.
5. The flying vehicle crashes, and you land on one of the building's rooftops.
6. Search for Weyland.
7. Follow Panam and enter the security room.
8. Proceed to infiltrate Alt into the system.
9. Reach Mikoshi.
10. Final battle with Johnny's killer.
11. Adam kills Panam, but she managed to hit him with a grenade. Quickly grab Panam's weapon.
12. Reunite with V by connecting to Mikoshi.

Once V transfers to cyberspace, you will face another choice:

• Johnny takes control of your shell, and you exist as part of Alt.
• V remains themselves. To ensure everything goes right, you need to choose the following: "I think you and Panam should leave" and immediately take the Omega blockers.
  
  
Congratulations, in the second case, you become a true legend!