Cosmic Star Heroine
34 Achievements
10-12h
PS4
Primer
Defeat the Prime Evil.
16.7%
How to unlock the Primer achievement in Cosmic Star Heroine - Definitive Guide
morthbeb9786
MISSABLE
Optional Boss
After completing the asteroid mission, talk to Psybe on the spaceship to start his side quest. Now go to the Planet Rhomu and head for the lab. The Prime Evil is located behind the locked elevator door in the northwest part of the first area.
See video for more detail.
Alarius
stratege.ru
stratege.ru
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This quest becomes available after the battle on the asteroid. While on the ship, talk to Psybe, then go to the planet Rhomu. In the northwestern part of the map, look for a laboratory that has long been familiar from the plot; it has an elevator that you have not opened until now. Near him, Psybe will say that he knows the code and you will go to the floor below, where the boss will be waiting.