Is there difficulty achievement?

[GoodComrade]

I 100%ed this game when it released first on Epic Store. But I do not remember game asking me to select a difficulty

[JAG]

Nope, difficulty levels were added in a spring update (May 3rd 2022), but all achievements and unlocks work identically across all difficulty levels. You won't get anything out of playing on Master, and you aren't missing anything by playing on Student.