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