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.
Completed The Outer Worlds on supernova difficulty.
Had 75% or higher negative reputation with 3 factions.
Won the battle of Stellar Bay.
Completed The Outer Worlds on any difficulty.
Completed The Outer Worlds on hard difficulty.
Landed on Tartarus.
Used the medical inhaler 300 times.
Brought robo-destruction to Edgewater.
Skipped the Hope.
Skipped the Hope into the sun.
Learned the shocking truth about the colony.
Character level 30 reached.
Completed all companion quests.
Raised a skill to 100.
Killed an enemy under the effects of 4 science weapons.
Brokered peace between the Iconoclasts and MSI.
Starred in an Odeon Pictures movie.
Completed the SubLight quest lines.
Wore 'A Nice Hat' and 'Chimaera' at the same time.
Finished a companion's quest line.
Dealt with the cartographer.
Killed 30 automechanicals with shock damage.
Landed in Byzantium.
Stopped the Monarch broadcasts.
Killed 50 enemies with sneak attacks.
Improved your gear 30 times through tinkering and mods.
Hit 30 enemies in the groin during tactical time dilation.
Had 75% or higher positive reputation with 3 factions.
Killed an enemy with a science weapon sneak attack during TTD, with a weakspot critical hit.
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.
Turned 100 enemies to ash with plasma damage.
Killed 50 enemies with a tossball stick or tossball blocker.
Recruited all of the companions.
Reached Stellar Bay.
Sold 10,000 bits worth of items to vendors.
Saved the universe's greatest diet toothpaste recipe.
Acquired 3 flaws.
Used dialog skills 30 times in conversations.
Succeeded at 3 dialog conversation checks with a single disguise.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Got your very own ship.
Killed a mega creature.
Simultaneously equipped Spacer's Choice brand clothing, headgear, and 4 weapons.
Recruited a companion.
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.