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.
Won the battle of Stellar Bay.
Skipped the Hope into the sun.
Completed The Outer Worlds on supernova difficulty.
Saved Edgewater permanently.
Brought robo-destruction to Edgewater.
Dealt with the cartographer.
Killed 50 enemies with companion abilities.
Killed an enemy with a science weapon sneak attack during TTD, with a weakspot critical hit.
Killed 30 automechanicals with shock damage.
Killed an enemy under the effects of 4 science weapons.
Simultaneously equipped Spacer's Choice brand clothing, headgear, and 4 weapons.
Had 75% or higher negative reputation with 3 factions.
Used the medical inhaler 300 times.
Raised a skill to 100.
Improved your gear 30 times through tinkering and mods.
Killed an enemy that was hit with all 5 damage types.
Killed 20 enemies that were infected by spreading N-rays.
Completed The Outer Worlds on any difficulty.
Completed The Outer Worlds on hard difficulty.
Character level 30 reached.
Landed on Tartarus.
Skipped the Hope.
Learned the shocking truth about the colony.
Starred in an Odeon Pictures movie.
Wore 'A Nice Hat' and 'Chimaera' at the same time.
Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.
Completed all companion quests.
Killed 50 enemies with sneak attacks.
Completed the SubLight quest lines.
Finished a companion's quest line.
Landed in Byzantium.
Brokered peace between the Iconoclasts and MSI.
Stopped the Monarch broadcasts.
Had 75% or higher positive reputation with 3 factions.
Killed 50 enemies with a tossball stick or tossball blocker.
Hit 30 enemies in the groin during tactical time dilation.
Acquired 3 flaws.
Turned 100 enemies to ash with plasma damage.
Sold 10,000 bits worth of items to vendors.
Recruited all of the companions.
Reached Stellar Bay.
Used dialog skills 30 times in conversations.
Succeeded at 3 dialog conversation checks with a single disguise.
Saved the universe's greatest diet toothpaste recipe.
Got your very own ship.
Killed a mega creature.
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.