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