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