OSES
Steam12achievements
How hard is OSES?
Not rated yet
Finishing it
OSES has an ending, but nothing in its achievement list marks it clearly enough to trust — so there's no finish rate to show.
Rarest achievements
Published rarity by platform.
Steam
Out of stockBuy all of the items from the in-game shop.26%
Challenge acceptedComplete all the official map challenges.26%
Sniper efficiencyKill 3 zombies with one shot using the sniper rifle27%
Burning laserApply damage to 5 zombies without releasing the trigger using the laser gun.27%
Money pileAccumulate 20,000 credits in the game.28%
Played OSES? See how many of these you've got.
- Which ones you've earned — and which you're missing
- Your rarest unlock, and where it ranks
- Your whole history for this game, on one timeline
- Steam, PlayStation, Xbox and Battle.net in one place
Free. Takes about a minute.
About OSES
OSES is a strategic post-apocalyptic shooter in which 3 characters fight by using different guns to survive the zombie hordes in various scenarios and game modes.
Get this game
How rarity is calculated
Each platform calculates rarity from its own player population. These percentages are shown side by side but are not a controlled comparison.
- Steam — Valve's published global unlock percentage across Steam owners of the game.
Percentages are shown exactly as each platform publishes them. Pyroblast does not recalculate them and does not mix player populations together. Data updated .