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