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