Here is the full list of all 80 Starward Rogue achievements.
Actually find (pick up) every single item.
Satisfy the unlock conditions for all items.
Beat each boss with a perfect clear.
Beat the boss "Invader" with a perfect clear.
Beat the boss "Recast" with a perfect clear.
Beat each AuGMENTED boss with a perfect clear.
Beat each condemned boss.
Kill at least one of each non-boss enemy.
Pick up the Incredibility Consummate Consumer on the first floor, never drop it, and win the run.
Pick up the Incredibility High Speed Danger on the first floor, never drop it, and win the run.
Pick up the Incredibility Corrupting Power on the first floor, never drop it, and win the run.
Pick up the Incredibility Risky Assassin on the first floor, never drop it, and win the run.
Pick up the Incredibility Lilliputians on the first floor, never drop it, and win the run.
Pick up the Incredibility Minimalist on the first floor, never drop it, and win the run.
Beat the boss "CarrionEngine" with a perfect clear.
Kill the "real" final boss with the Paladin mech.
Beat the boss "Vestige" with a perfect clear.
Kill the "final" boss while using the Paladin mech.
Pick up the Incredibility The One on the first floor, never drop it, and win the run.
Kill the "real" final boss with the Warhog mech.
Kill the "final" boss while using the Warhog mech.
Beat the boss " Labyrinth" with a perfect clear.
Kill the "real" final boss with the Zephyr mech.
Kill the "final" boss while using the Zephyr mech.
Kill the "real" final boss with the Penumbra mech.
Beat the boss "Valor" with a perfect clear.
Kill the "final" boss while using the Penumbra mech.
Kill the "real" final boss with the Deep Blue mech.
Kill the "real" final boss with each of the original six mechs.
Beat the boss "ShrapnelRose" with a perfect clear.
Pick up the Incredibility Life Harvester on the first floor, never drop it, and win the run.
Kill the "real" final boss with the White Gloss mech.
Pick up the Incredibility Magnetic Personality on the first floor, never drop it, and win the run.
Kill the "real" final boss with the Indigo Dipole mech.
Beat the boss "Meridian" with a perfect clear.
Complete a run without picking up any attachment items.
Kill the "real" final boss with the Flame Tank mech.
Beat the boss "Reanimator" with a perfect clear.
Beat the boss "Circuit Rondure" with a perfect clear.
Pick up the Incredibility The Creator on the first floor, never drop it, and win the run.
Kill the "real" final boss with the Green Envy mech.
Beat the boss "LadyStaccato" with a perfect clear.
Beat the boss "Centrifuge" with a perfect clear.
Beat the boss "Aberration" with a perfect clear.
Pick up the Incredibility Jaywalker on the first floor, never drop it, and win the run.
Kill the "real" final boss with the Alpha mech.
Beat each miniboss with a perfect clear.
Beat the boss "Nova" with a perfect clear.
Kill the "final" boss while using the Alpha mech.
Kill the "real" final boss with the Humble mech.
Beat the boss "Pandemonium" with a perfect clear.
Kill the "final" boss while using the Humble mech.
Beat the boss "Rive" with a perfect clear.
Complete a run without buying any items.
Beat the boss "Terminus" with a perfect clear.
Kill the "real" final boss with the Redshift mech.
Beat the boss "Aggressor" with a perfect clear.
Kill the "final" boss while using the Redshift mech.
Kill the "final" boss with each of the original six mechs.
Beat the boss "Javelin" with a perfect clear.
Have 5 familiars at once.
Kill the "final" boss while using the Deep Blue mech.
Beat the boss "Periphery" with a perfect clear.
Kill the "final" boss while using the Indigo Dipole mech.
Beat the boss "Fusillade" with a perfect clear.
Kill the "final" boss while using the Green Envy mech.
Beat the boss "The Warden" with a perfect clear.
Beat the boss "Largesse" with a perfect clear.
Beat the boss "Battleswarm" with a perfect clear.
Pick up the Incredibility Confidence on the first floor, never drop it, and win the run.
Kill the "final" boss while using the Flame Tank mech.
Beat the boss "Metal Legion" with a perfect clear.
Complete a floor with no damage.
Beat the boss "Sunder" with a perfect clear.
Beat the boss "WallMaster" with a perfect clear.
Beat the boss "Crystal Mother" with a perfect clear.
Kill a shopkeeper.
Kill the "final" boss while using the White Gloss mech.
Beat the boss "Mirror" with a perfect clear.
Beat the boss "Backfire" with a perfect clear.