One by One

One by One

27 achievements
Ultra Rareร—6
Very Rareร—6
Rareร—4
Uncommonร—3
Commonร—8

About One by One's achievements

One by One has 27 Steam achievements, 6 of them ultra-rare โ€” unlocked by under 5% of players. The rarest is "Chad", earned by just 0.7% of players. Below is the complete achievement list with global rarity and a full achievement difficulty breakdown.

Rarest achievement
0.7%
of players earned "Chad"

Community Ratings

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Difficultyโ€”
Easy โ†’ Brutal
Enjoymentโ€”
Meh โ†’ Loved it
Grindinessโ€”
No grind โ†’ Huge grind
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All One by One achievements

27 achievements
Chad
Chad
Complete the game from start without picking any artifacts
Ultra Rare0.7%
Monster Mask
???
Hidden achievement โ€” tap Reveal secrets to spoil
Ultra Rare1.1%
Crimson crossbow
???
Hidden achievement โ€” tap Reveal secrets to spoil
Ultra Rare1.5%
Nail gun
Nail gun
Avoid any damage at AI court. Nailed it!
Ultra Rare1.5%
Heavy pistol
Heavy pistol
Defeat the Guardian without picking any item (Low%)
Ultra Rare3.4%
Determination
Determination
Resque this adventurer in the Uncertainty
Ultra Rare4.9%
Pyromaniac
Pyromaniac
Witness fires consume whole room
Very Rare5.3%
Marathon!
Marathon!
SPEEDRUN! Complete the game with one life.
Very Rare7.9%
Sparkling boots
Sparkling boots
Complete labyrinth in 90 seconds
Very Rare8.7%
Inspiration
???
Hidden achievement โ€” tap Reveal secrets to spoil
Very Rare10.6%
Electric Coils
Electric Coils
Defeat the crusher of worlds
Very Rare14.0%
Spiked bow
Spiked bow
Find this artifact in the darkest corners of the jungles
Very Rare14.8%
Hourglass
Hourglass
Steal Devil's time. He has no time for games
Rare15.5%
Magnet Gun
Magnet Gun
Survive AI court
Rare17.4%
Angry Reloader
Angry Reloader
Have 3 weapons reload at the same time
Rare22.4%
Magic Cake
Magic Cake
Acquire 3 equipment in one run
Rare29.6%
Frog Rain
Frog Rain
Defeat the Empress.
Uncommon32.3%
Crystal cannon
Crystal cannon
Survive crystal infused room
Uncommon34.2%
Sniper scope
Sniper scope
Snipe down a monster from far off
Uncommon42.2%
Marshmellow
Marshmellow
Survive dry room, where fires spread faster!
Common51.3%
Bestiary
Bestiary
Defeat rare enemy
Common59.6%
Lightweight sniper rifle
Lightweight sniper rifle
Thriumph over harpy queen
Common65.3%
Portal room
Portal room
Defeat the Guardian
Common68.0%
Box of parasites
Box of parasites
Encounter parasites in caves. Maybe, we can pet them?
Common73.3%
Arsenal
Arsenal
Find lost scroll
Common75.6%
Map of the dungeon
Map of the dungeon
Reveal all rooms in labyrinth
Common77.5%
Bandage
Bandage
Face defeat in the dungeon
Common89.3%