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