Here is the full list of all 17 Legacy of the Elder Star achievements.
Complete story mode without using any continues.
Complete story mode.
Earn all eight medals in any story mode stage.
Achieve S Rank in story mode.
Achieve A Rank in story mode.
Achieve B Rank in story mode.
Achieve C Rank in story mode.
Achieve D Rank in story mode.
Unlock the Shotgun.
Unlock the Plasma Cannon.
Unlock the Swarm Missile.
Unlock the Star Mines.
Unlock the Beam ability.
Unlock the Comet ability.
Complete a run in Daily Challenge mode.
Complete a run in Gauntlet mode.
Check out every settings category.