Security 51 Steam Achievements Guide: All 68 Unlocks Explained

What Are Security 51 Steam Achievements?

Security 51 dropped on Steam on August 12, 2026, and it brought along a hefty collection of 68 Steam achievements for completionists to chase. If you're diving into this atmospheric horror security simulator from Alawar, you'll want to know exactly what you're up against. Security 51 Steam achievements cover everything from simply surviving your first shift to managing city-wide containment operations and running experiments in the isolation ward.

The game takes inspiration from Papers, Please and SCP paranoia, placing you as a security guard in the underground bunker of Area 51. Your job sounds straightforward—check documents, verify identities, and decide who gets through—but the deeper you go, the more the rules change and the more achievements unlock. Player experience suggests that the achievement list rewards both careful attention to detail and a willingness to experiment with the game's escalating mechanics.

Understanding the Achievement Categories

Security 51 Steam achievements aren't officially grouped by the developer, but based on gameplay progression and community reports, they fall into several natural categories tied to the game's escalating systems.

Notable Achievement Names Spotted on Steam

The official Steam store page for Security 51 displays a few achievement icons and names publicly. Here's what we know so far:

The remaining 64 achievements are visible on the Steam client once you own the game, and community reports indicate many are tied to multi-day progression chains and specific decision trees.

Early Game Achievement Strategy

The first few days of Security 51 are relatively forgiving, making them the perfect window to rack up early achievements. Community reports indicate that the game introduces mechanics gradually—document checking on day one, X-ray scanning on day two, and camera photography by day four.

Day-by-Day Achievement Opportunities

Tips for Early Achievement Hunting

• Read the instructions every single day. The rules change constantly, and player experience confirms that following outdated rules from a previous day will get you fined. Some achievements likely reward perfect adherence to the daily protocol.
• Don't skip the store. Between shifts, you can buy sandwiches, tools, and upgrades. Some achievements may be tied to purchasing specific items like the upgraded film cassette or X-ray area access.
• Experiment with the isolation ward. Once your clearance level upgrades and you gain access to the temporary holding room, you can conduct one experiment per day. These experiments feed into city operations, and achievement hunters should prioritize trying different experiment types.
• Pay attention to the elevator. Community reports indicate the elevator mechanic becomes important later in the game, and some players found it confusing. Mastering it early may unlock specific achievements tied to elevator management.

Mid-to-Late Game Achievement Challenges

As Security 51 progresses, the complexity ramps up significantly. Player experience from early access and demo playthroughs suggests that by the time you reach the city monitoring interface, you're juggling four simultaneous systems:

1. Desk inspection — checking visitors' documents, photos, and bodies
2. Isolation ward — conducting daily experiments on quarantined individuals
3. Elevator management — monitoring who enters and exits the underground levels
4. City operations — authorizing agent actions based on experiment data

This is where the bulk of the hidden and narrative Security 51 Steam achievements likely reside. The game's description on Steam hints that "some decisions will have immediate consequences, others only after several shifts," suggesting that certain achievements are tied to long-term decision chains.

Containment and City Achievement Strategies

The "Pagliacci" Achievement Theory

The achievement titled "...I am Pagliacci!" is generating significant community speculation. The name references the classic joke about the doctor who tells the patient to go see the great clown Pagliacci, only for the patient to reveal they are Pagliacci. In the context of Security 51's SCP-inspired horror, this could relate to:

• Discovering that a trusted colleague or recurring visitor is actually an anomaly
• A narrative twist where the player character themselves is not entirely human
• A specific visitor encounter that subverts expectations

Community reports suggest this is likely a late-game, story-locked achievement that cannot be missed if you progress through the main narrative.

Achievement Difficulty and Completion Estimate

Based on the game's 69% positive review rating and player feedback about escalating complexity, here's an estimated breakdown of achievement difficulty:

Estimated time to 100% completion: 20-30 hours, assuming you follow a guide for hidden achievements and maintain careful attention to daily protocols.

Factors That Affect Achievement Hunting

• No days off mechanic — The game explicitly tells you there are no days off, meaning progression is continuous and achievements tied to specific days can't be skipped
• Shifting rules — Daily instruction changes mean you must adapt constantly, making perfect-shift achievements increasingly difficult
• Economy management — Forgetting to buy food or upgrades between shifts can lead to failure states that block progression achievements
• Multiple endings — The game's emphasis on consequences suggests multiple possible endings, meaning some achievements may require separate playthroughs

FAQ

How many Security 51 Steam achievements are there?

Security 51 includes 68 Steam achievements in total. These range from simple progression milestones unlocked during normal play to hidden narrative achievements that require specific actions or story decisions.

Can I unlock all Security 51 Steam achievements in one playthrough?

Community reports suggest that most achievements can be unlocked in a single playthrough, but the game's emphasis on branching consequences and multiple decision paths means some hidden achievements may require additional playthroughs. The game's "no days off" structure means you'll need to make careful choices throughout.

Are there missable achievements in Security 51?

Based on the game's design where daily rules change and decisions carry long-term consequences, it's likely that several Security 51 Steam achievements are missable. If you fail to conduct experiments in the isolation ward, authorize city operations at critical moments, or make specific visitor decisions on certain days, you may lock yourself out of achievements until a new playthrough.

Do I need to buy all store upgrades for achievements?

Player experience indicates that the store plays a meaningful role in progression, with items like the upgraded film cassette and X-ray area access being important for later shifts. While not every store purchase may be tied to an achievement, some Security 51 Steam achievements likely require specific tool upgrades to function—so budget your earnings wisely between shifts.