Full list of all 68 The Outer Worlds achievements worth 1,390 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game.
The base game contains 48 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 20 achievements worth 390 Gamerscore.
Completed The Outer Worlds on supernova difficulty.
Brought robo-destruction to Edgewater.
Dealt with the cartographer.
Character level 30 reached.
Killed an enemy under the effects of 4 science weapons.
Killed an enemy that was hit with all 5 damage types.
Skipped the Hope into the sun.
Starred in an Odeon Pictures movie.
Brokered peace between the Iconoclasts and MSI.
Killed 50 enemies with sneak attacks.
Turned 100 enemies to ash with plasma damage.
Used the medical inhaler 300 times.
Raised a skill to 100.
Succeeded at 3 dialog conversation checks with a single disguise.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Killed 20 enemies that were infected by spreading N-rays.
Killed an enemy with a science weapon sneak attack during TTD, with a weakspot critical hit.
Killed 50 enemies with companion abilities.
Killed 50 enemies with a tossball stick or tossball blocker.
Hit 30 enemies in the groin during tactical time dilation.
Wore 'A Nice Hat' and 'Chimaera' at the same time.
Had 75% or higher negative reputation with 3 factions.
Simultaneously equipped Spacer's Choice brand clothing, headgear, and 4 weapons.
Killed 30 automechanicals with shock damage.
Completed the SubLight quest lines.
Completed all companion quests.
Finished a companion's quest line.
Improved your gear 30 times through tinkering and mods.
Recruited all of the companions.
Completed The Outer Worlds on hard difficulty.
Completed The Outer Worlds on any difficulty.
Landed on Tartarus.
Skipped the Hope.
Saved Edgewater permanently.
Acquired 3 flaws.
Learned the shocking truth about the colony.
Landed in Byzantium.
Won the battle of Stellar Bay.
Had 75% or higher positive reputation with 3 factions.
Stopped the Monarch broadcasts.
Sold 10,000 bits worth of items to vendors.
Killed a mega creature.
Used dialog skills 30 times in conversations.
Reached Stellar Bay.
Saved the universe's greatest diet toothpaste recipe.
Got your very own ship.
Recruited a companion.
Landed in Emerald Vale.
Complete Peril on Gorgon on any difficulty.
Power the reactor.
Destroy the Synthesizer.
Listen to Lucky Montoya's message.
Find Olivia Ambrose's journal.
Find Lucky Montoya's body.
Deliver the journal to Lucien.
Find 20 Portable Phonographs.
Achieve a compromise between Olivia and Minnie.
Acquire Special Delivery, P.E.T., and Employee Benefits.
Complete Murder on Eridanos on any difficulty.
Kill the Slug Queen.
Choose to either infect or cure Eridanos.
Receive an invitation to Eridanos.
Use the Discrepancy Amplifier for the first time.
Investigate every suspect and report your findings to Administrator Ludovico.
Discover the biggest secret in the aetherwave industry.
Acquire Spectrum Gatling, The Needler, and Udder Buddy.
Kill 50 Infected Humans or Parasites.
Ask a companion to be the Bad Inspector.