Oneiro

42 achievements

Ultra Rare×16

Very Rare×11

Rare×9

Uncommon×4

Common×2

About Oneiro's achievements

Oneiro has 42 Steam achievements, 15 of them ultra-rare — unlocked by under 5% of players. The rarest is "Rule Breaker", earned by just 0.5% of players. Below is the complete achievement list with global rarity and a full achievement difficulty breakdown.

Rarest achievement

0.5%

of players earned "Rule Breaker"

🗺️ Community guides & walkthroughs

Community Ratings

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Difficulty—

Easy → Brutal

Enjoyment—

Meh → Loved it

Grindiness—

No grind → Huge grind

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All Oneiro achievements

42 achievements

Running in the 9.0m/s

Using the Pocket Bonfire, perform a sideways roll while your speed stat is at least 9.0m/s.

Ultra Rare0.0%

Rule Breaker

Have more than 1 of any Extraordinary item in your inventory.

Ultra Rare0.5%

Very Spiky Boots

Conquer a nightmare using spiked boots.

Ultra Rare1.0%

Acrobat

While airborne, defeat 2 enemies with throwable gear.

Ultra Rare1.3%

I'm Sleeping In

Use 10 Sleeping Medication to increase your Sleep Timer by 5 minutes in a single dream.

Ultra Rare1.6%

Porcupine

Have a single enemy impaled with 3 spears simultanously.

Ultra Rare2.1%

Drunken Brawl

Defeat an enemy with your right fist while drinking with your left.

Ultra Rare2.1%

Hearty Personality

Reach a Max Health value of 300 or more.

Ultra Rare2.4%

You're not trapped in there with them...

Defeat 150 enemies within a single nightmare.

Ultra Rare3.0%

Delayed Punishment

Kill an imp after they've teleported, but before they reappear.

Ultra Rare3.5%

Dream of Genies

Collect 10 Magical Lamps within a single dream.

Ultra Rare3.5%

Feeling Indecisive

Swap weapons 15 times within a single dream.

Ultra Rare3.5%

Defensive Measures

Parry an enemy attack that would have otherwise killed you.

Ultra Rare3.8%

The floor is lava

Stay airborne for 20 straight seconds.

Ultra Rare4.6%

200k

Reach 200,000 score by the end of a nightmare.

Ultra Rare4.6%

Combo God

Achieve a primary combo of 7

Ultra Rare4.9%

I'd Bet My Life On It

Save yourself by teleporting via Dice while you're plummeting towards the void below.

Very Rare5.4%

Plenty of Loot

Open/break 50 treasure chests within one dream.

Very Rare7.4%

REM

Face the source of your fears and emerge victorious.

Very Rare7.4%

Fools' Gold

Defeat the golden treasure in your Third Layer.

Very Rare7.6%

Fisticuffs

Deliver the final hit to a boss with your fists.

Very Rare7.9%

Hang on Wright

Use a grapple hook to latch onto an airborne spear- discovering a revolutionary method of travel.

Very Rare8.2%

Chain Reaction

Defeat 3 enemies in a row via On Kill item effects.

Very Rare10.4%

Arachnophobia

Eliminate 10 Arachnids in your First Layer

Very Rare10.7%

NREM 3

Defeat Dread; and begin drifting off into your final Layer.

Very Rare10.9%

Exit Wounds

Defeat an enemy by pulling out a lodged spear.

Very Rare11.5%

Doubling Up

Gain an extra 100% bonus in any base stat (Not including temporary boosts).

Very Rare14.0%

Damage Dealer

Deal 25,000 damage within a single dream.

Rare15.3%

NREM 2

Defeat Fear; and begin drifting off into your next Layer.

Rare18.1%

Damage Sponge

Take 850 damage within one dream

Rare18.4%

100k

Reach 100,000 score by the end of a nightmare.

Rare18.6%

Typical Labyrinth

Find and defeat the bull in your Second Layer.

Rare18.9%

Almost Poetic

Kill an Arachnid with hatchlings spawned from the Spider Egg item.

Rare18.9%

Death Wish

Awaken and defeat the beast that dwells in your First Layer.

Rare21.1%

50k

Reach 50,000 score by the end of a nightmare.

Rare28.2%

Listen to the Wisdom

Pay a Living Wall to increase one of your base stats.

Rare29.1%

NREM 1

Defeat Terror; and begin drifting off into your next Layer.

Uncommon34.3%

Labyrinth Deconstruction

Disturb your Labyrinth by removing the core.

Uncommon43.9%

Reflection

Defeat an enemy via an On Hurt item.

Uncommon46.4%

And that's when I realized...

That wasn't no treasure, it was a gotdarn mimic!

Uncommon47.5%

Poor Construction

Kill an enemy via collapsed ceiling

Common76.9%

Friendly Fire

Lure an enemy into another enemy's fire source, igniting them.

Common80.4%