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