Here is the full list of all 142 Stellar Interface achievements.
Killed 100000 enemies.
Died 1000 times.
Used consumables 500 times.
Died 500 times.
Cleared 1000 levels.
Proved that you are the strongest of them all, 5 times.
Had Joy, Capitalist Consumerist, Salty Elixir and Cloverleaf installed at the same time.
Completed 20 different bronze missions.
Completed all missions in a run.
Cleared all levels 5 times.
Cleared all levels 10 times.
Cleared all levels 20 times.
Cleared all levels 50 times.
Killed 100 bosses.
Visited 100 Lost Lords.
Ate two meals.
Proved that you are the strongest of them all, 3 times
Cleared all levels 2 times.
Proved that you are the strongest of them all.
Defeated Homunculus 5 times.
Visited 100 merchants.
Died 100 times.
Died 200 times.
Played for one day.
Killed 50000 enemies.
Defeated Homunculus 3 times.
Defeated Space Winner 5 times.
Visited 500 regular levels.
Played for 20 hours.
Died 50 times.
Killed 50 bosses.
Visited 50 Lost Lords.
Defeated Space Winner 3 times.
Cleared 500 levels.
Have 10 active drones.
Defeated Homunculus 1 time.
Installed 80 different softwares.
Cleared all levels 1 time.
Defeated Space Winner 1 time.
Unlocked Stag.
Coated some iron in your skin, then electrified it.
Completed a level without any casualties.
Stocked up 20 cartridges without using them
Completed 5 different bronze missions.
Completed 10 different bronze missions.
Completed 5 different silver missions.
Completed 10 different silver missions.
Completed 5 different gold missions.
Visited 10 Overlords.
Unlocked Star Fury.
Killed 20 bosses.
Defeated The Hive 5 times.
Used consumables 100 times.
Cleared 20 levels in a single run.
Defeated The Hive 3 times.
Unlocked Eagle.
Played for 10 hours.
Killed 10 bosses.
Defeated Hober Mallow 5 times.
Unlocked Dove.
Killed 20000 enemies.
Cleared 200 levels.
Visited 10 Lost Lords.
Visited 10 merchants.
Unlocked Lily.
Defeated The Hive 1 time.
Defeated Hober Mallow 3 times.
Unlocked Kilgore.
Used consumables 50 times.
Played for 5 hours.
Cleared 100 levels.
Visited 100 regular levels.
Installed 50 different softwares.
Visited your first Lost Lord.
Killed 10000 enemies.
Unlocked Erebus.
Defeated Hober Mallow 1 time.
Died 10 times.
Cleared 50 levels.
No damage taken in 3 consecutive levels.
Killed 5000 enemies.
Used consumables 10 times.
Played for 1 hour.
Installed 25 different softwares.
Visited your first Overlord.
Accumulate at least 10 usages of a single consumable.
Visited your first merchant.
Installed 10 different softwares.
Cleared 10 levels.
Killed 1000 enemies.
Visited 10 regular levels.
Unlocked Corvette.
Killed 500 enemies.
Installed 5 different softwares.
Killed 100 enemies.
Killed 10 enemies.
Used consumables 1000 times.
Visited 1000 merchants.
Visited 25 Overlords.
Visited 50 Overlords.
Visited 100 Overlords.
Visited 1000 regular levels.
Visited 2000 regular levels.
Killed 500 bosses.
Killed 1000 bosses.
Installed quintuple projectiles and quintuple radial projectiles.
Got your projectiles 2x bigger and your spacecraft 2x smaller.
Cleared 2001 levels.
Flew for 1h with each spacecraft.
Flew for 2h with each spacecraft.
Flew for 3h with each spacecraft.
Had 20 active drones.
Completed all bronze missions.
Completed 20 different silver missions.
Completed all silver missions.
Completed 10 different gold missions.
Completed 20 different gold missions.
Completed all gold missions.
Used all softwares at least once.
Used all consumables at least once.
Obtained all badges in all spacecrafts.
Unlocked all achievements!