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.
Saved Edgewater permanently.
Dealt with the cartographer.
Killed 50 enemies with a tossball stick or tossball blocker.
Brought robo-destruction to Edgewater.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Completed The Outer Worlds on any difficulty.
Raised a skill to 100.
Landed on Tartarus.
Skipped the Hope.
Character level 30 reached.
Killed 50 enemies with sneak attacks.
Learned the shocking truth about the colony.
Turned 100 enemies to ash with plasma damage.
Brokered peace between the Iconoclasts and MSI.
Had 75% or higher negative reputation with 3 factions.
Won the battle of Stellar Bay.
Completed the SubLight quest lines.
Wore 'A Nice Hat' and 'Chimaera' at the same time.
Killed 20 enemies that were infected by spreading N-rays.
Completed all companion quests.
Starred in an Odeon Pictures movie.
Landed in Byzantium.
Finished a companion's quest line.
Simultaneously equipped Spacer's Choice brand clothing, headgear, and 4 weapons.
Hit 30 enemies in the groin during tactical time dilation.
Stopped the Monarch broadcasts.
Succeeded at 3 dialog conversation checks with a single disguise.
Acquired 3 flaws.
Recruited all of the companions.
Used dialog skills 30 times in conversations.
Reached Stellar Bay.
Had 75% or higher positive reputation with 3 factions.
Sold 10,000 bits worth of items to vendors.
Killed 30 automechanicals with shock damage.
Saved the universe's greatest diet toothpaste recipe.
Improved your gear 30 times through tinkering and mods.
Got your very own ship.
Killed a mega creature.
Recruited a companion.
Landed in Emerald Vale.
Complete The Outer Worlds on hard difficulty.
Complete The Outer Worlds on supernova difficulty.
Kill 50 enemies with companion abilities.
Use the medical inhaler 300 times.
Kill an enemy that was hit with all 5 damage types.
Kill an enemy with a science weapon sneak attack during TTD, with a weakspot critical hit.
Kill an enemy under the effects of 4 science weapons.
Skip the Hope into the sun.
Completed Peril on Gorgon on any difficulty.
Destroyed the Synthesizer.
Found Olivia Ambrose's journal.
Listened to Lucky Montoya's message.
Power the reactor.
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.