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