Last updated: May 10, 2026. This guide covers all known items, keycards, and puzzle types in Pressure as of the latest update, including the March 2026 “Half A Slice Of Cake” update additions (200+ item skins, 260+ charms, 50+ modifiers).
Overview
Items and puzzles are the backbone of progression in Pressure. Without the right keycards, you cannot unlock doors. Without understanding puzzle mechanics, you will waste precious time — and in the Hadal Blacksite, wasted time often means death. This guide catalogs every known item type, keycard level, puzzle mechanic, and provides actionable strategies for using them effectively.
Complete Item Catalog
Pressure features dozens of items, each serving a specific purpose. Understanding what each item does and where to find it is essential for survival.
Light Sources
| Item | Description | Duration | Where to Find | Priority |
|---|---|---|---|---|
| Flashlight | Standard handheld light with battery drain | Battery-dependent (varies) | Starting room, desks, supply closets | Critical |
| Glowstick | Chemical light source, no batteries needed | Single-use, ~3 minutes | Storage rooms, cabinets, desks | High |
| Lantern | Heavy-duty light with long battery life | Extended battery life | Medical bays, late-game supply rooms | High |
| Flash Beacon | Deployable stationary light source | ~5 minutes | Late-game storage, rare finds | Medium |
Tips for Light Management:
- Always equip your flashlight before entering a new room so you can see immediately
- Glowsticks are your best backup — they don’t require batteries and can be activated instantly
- The Flash Beacon is useful for illuminating large rooms while you search — place it in the center
- Monitor your flashlight battery bar and switch to a glowstick when it drops below 20%
- Some dark rooms are completely unplayable without a light source — never proceed without one
Healing Items
| Item | Health Restored | Use Time | Where to Find | Stack Limit |
|---|---|---|---|---|
| Bandages | Moderate heal | ~2 seconds | Medical bays, supply closets, desks | 3-4 |
| Medkit | Full heal | ~3 seconds | Rare medical rooms, hidden caches | 1-2 |
| Adrenaline Shot | Instant small heal + speed boost | ~1 second | Late-game, rare spawns | 1 |
Healing Strategy:
- Always keep at least 2 bandages in your inventory
- Use bandages between entity encounters, not during — you are vulnerable while healing
- Save the Medkit for emergencies — using it for minor damage is wasteful
- The Adrenaline Shot’s speed boost can help you escape dangerous situations — use it strategically
Keycards and Access Items
| Item | Access Level | Doors Unlocked | Rarity | Notes |
|---|---|---|---|---|
| Level 1 Keycard | Basic access | Standard locked doors | Common | Found in most rooms |
| Level 2 Keycard | Security access | Security doors, panels | Uncommon | Found in security areas |
| Level 3 Keycard | High-security access | Heavy containment doors | Rare | Found in late-game zones |
| Level 4 Keycard | Master access | Restricted areas, vaults | Very Rare | Boss-area keycard |
| Level 5 Keycard | Director-level access | Final zones, crystal area | Extremely Rare | Room 100 access |
| Master Keycard | Universal access | All keycard doors | Legendary | Hidden/rare reward |
| Lockpick | Opens locked lockers | Locked storage | Uncommon | Can find rare items inside |
Utility Items
| Item | Function | Where to Find | Use Case |
|---|---|---|---|
| Necrobloxicon | Reveals hidden entity locations | Rare rooms, hidden areas | Advanced scouting |
| Radio | Receives audio cues and hints | Supply rooms, desks | Early warning system |
| Compass | Shows direction to next door | Rare finds | Navigation in complex rooms |
| Lockpick | Opens locked lockers | Supply rooms, desks | Access hidden items |
| The Crystal (Z-2) | Main objective | Room 100 | Required for escape |
Keycard System Deep Dive
The keycard system in Pressure is hierarchical — higher-level keycards unlock more doors, and some areas require specific keycard levels to progress.
Keycard Progression Path
| |
| Keycard Level | Typical Location | What It Opens | When You Need It |
|---|---|---|---|
| Level 1 | Starting areas, first 20 rooms | Basic locked doors, supply closets | Rooms 1-20 |
| Level 2 | Security checkpoints, Rooms 20-40 | Security panels, armory doors | Rooms 20-40 |
| Level 3 | Heavy containment, Rooms 40-60 | Containment cell doors, labs | Rooms 40-60 |
| Level 4 | Deep facility, Rooms 60-80 | Vault doors, restricted corridors | Rooms 60-80 |
| Level 5 | Final approach, Rooms 80-100 | Crystal chamber, extraction | Rooms 80-100 |
| Master | Hidden locations | Everything | Any time |
Keycard Finding Strategy
| Tip | Details |
|---|---|
| Check every desk | Keycards are frequently placed on desk surfaces |
| Open all cabinets | Lower cabinets often contain keycards |
| Search supply rooms first | These rooms have the highest keycard spawn rate |
| Don’t skip medical bays | Level 2+ keycards often appear near medical equipment |
| Use lockpicks on locked lockers | They can contain higher-level keycards |
| Listen for keycard sounds | Some keycards emit a faint hum when nearby |
Keycard Management Tips
- Never discard a keycard unless you have confirmed a higher-level replacement
- Lower-level keycards become useless as you progress — trade them to teammates who need them
- Keycards are single-use per door — each locked door requires its own swipe
- If playing solo, prioritize finding Level 2+ keycards early to avoid being blocked later
- Keycard doors are always marked — look for card reader panels next to doors
- Check floor guides — See the Floors and Locations Guide for which keycard levels you need in each section
Puzzle Types and Solutions
Pressure features several puzzle types that gate progression. Each puzzle requires a different approach, and understanding the mechanics will save you time and prevent unnecessary deaths.
Code Lock Puzzles
Description: Digital keypads requiring a numeric code to unlock doors or security panels.
| Aspect | Details |
|---|---|
| Appearance | Digital keypad with 0-9 buttons, usually next to a locked door |
| Code Length | 3-6 digits depending on difficulty |
| Code Source | Found in nearby documents, walls, or environmental clues |
| Attempts | Limited — too many wrong attempts may trigger an alarm |
How to Solve Code Locks:
- Search the surrounding area first — the code is always hidden somewhere in the same room or the previous room
- Look for written numbers on walls, whiteboards, or documents
- Check computer screens — some terminals display the code or hints
- Listen for audio cues — some codes are hinted through radio broadcasts
- Enter the code carefully — you typically have 3 attempts before a lockout
| Code Source Location | Frequency | Tip |
|---|---|---|
| Whiteboards on walls | Common | Look for scribbled numbers |
| Documents/papers | Common | Read every document you find |
| Computer terminals | Uncommon | Interact with all screens |
| Radio broadcasts | Uncommon | Listen carefully for number sequences |
| Environmental patterns | Rare | Count objects, follow sequences |
Lever and Switch Puzzles
Description: Multiple levers or switches that must be activated in the correct order or combination.
| Aspect | Details |
|---|---|
| Appearance | Wall-mounted levers, toggle switches, or button panels |
| Number of Levers | 2-6 per puzzle |
| Solution Method | Order-based or combination-based |
| Feedback | Lights or sounds indicate correct/incorrect activation |
How to Solve Lever Puzzles:
- Identify all levers in the room before touching any
- Look for visual hints — numbered labels, colored indicators, or symbols
- Try the most obvious pattern first (e.g., left to right, top to bottom)
- Pay attention to feedback — correct activations often trigger lights or sounds
- If a sequence is wrong, reset and try again — don’t randomly flip levers
| Lever Puzzle Type | Hint Pattern | Solution Approach |
|---|---|---|
| Numbered levers | Numbers on or near levers | Activate in numerical order (1-2-3…) |
| Color-coded levers | Colored indicators nearby | Match the color sequence shown |
| Symbol levers | Symbols on walls or documents | Match symbols in the order they appear |
| Hidden levers | Some levers are concealed | Search the room thoroughly for all switches |
Pattern and Sequence Puzzles
Description: Puzzles requiring you to replicate or identify patterns — lights, sounds, or visual sequences.
| Aspect | Details |
|---|---|
| Appearance | Light panels, sound emitters, or visual displays |
| Pattern Length | 3-8 elements |
| Time Limit | Varies — some are timed, some are not |
| Difficulty | Increases with floor depth |
How to Solve Pattern Puzzles:
- Watch or listen carefully to the presented pattern
- Mentally repeat the pattern before attempting to replicate it
- Focus on one element at a time — don’t try to memorize everything at once
- If timed, practice the sequence in your head before activating
- Some patterns use audio — make sure your game sound is on
| Pattern Type | How It Works | Difficulty |
|---|---|---|
| Light sequence | Lights flash in order, replicate the sequence | Easy-Medium |
| Audio pattern | Tones or sounds play in sequence, replicate | Medium |
| Color matching | Match colors to corresponding buttons | Easy |
| Symbol sequence | Symbols appear, press in the same order | Medium-Hard |
Environmental Puzzles
Description: Puzzles that require interacting with the environment rather than a specific interface.
| Puzzle Type | Description | Solution |
|---|---|---|
| Path finding | Choose the correct path through a hazardous area | Follow visual markers or safe-floor indicators |
| Object placement | Place items in specific locations to unlock doors | Find the required items and place them correctly |
| Pressure plates | Stand on or place objects on floor plates | Activate all plates simultaneously (may need multiple players) |
| Timed doors | Doors that close after a short window | Sprint through or find an alternate route |
| Hidden switches | Switches concealed in the environment | Search walls, floors, and furniture thoroughly |
Multiplayer Puzzles
Some puzzles require multiple players to solve simultaneously.
| Puzzle | Players Needed | Mechanic |
|---|---|---|
| Dual lever | 2 | Two levers must be pulled at the same time |
| Pressure plate array | 2-4 | Multiple floor plates must be activated simultaneously |
| Coordinated sequence | 2+ | Each player activates their assigned switch in order |
| Rescue puzzles | 2+ | One player activates a mechanism while another performs an action |
Multiplayer Puzzle Tips:
- Communicate clearly — assign who does what before starting
- Count down before simultaneous actions (3-2-1-GO)
- If you’re short on players, some puzzles have alternate solutions — search the room
- Never leave a teammate stranded during a coordinated puzzle
Item Locations by Floor
Different areas of the Hadal Blacksite have different item distributions. Knowing where to look for specific items will make your runs more efficient.
Early Floors (Rooms 1-30)
| Area | Common Items | Notable Finds |
|---|---|---|
| Entrance Corridors | Flashlights, Level 1 Keycards | Starting equipment |
| Supply Closets | Bandages, Glowsticks, Level 1 Keycards | Basic survival items |
| Desks and Offices | Flashlights, Keycards, Documents | Lore items, basic keys |
| Storage Rooms | Glowsticks, Lanterns, Lockpicks | Light sources, utility items |
Strategy: Early floors are your best opportunity to stock up on basics. Take your time to search every room thoroughly — you’ll find most of the items you need for the first half of the run.
Mid Floors (Rooms 30-60)
| Area | Common Items | Notable Finds |
|---|---|---|
| Security Checkpoints | Level 2-3 Keycards, Documents | Higher-level access cards |
| Medical Bays | Bandages, Medkits, Level 2 Keycards | Healing items, mid-level keys |
| Containment Cells | Level 3 Keycards, Rare items | High-security items |
| Lab Areas | Flash Beacons, Necrobloxicon (rare) | Advanced utility items |
Strategy: Mid floors introduce higher-level keycards and better healing items. Prioritize finding Level 2+ keycards here, as you’ll need them to progress.
Late Floors (Rooms 60-100)
| Area | Common Items | Notable Finds |
|---|---|---|
| Heavy Containment | Level 3-4 Keycards, Medkits | High-level access, full heals |
| Director’s Offices | Level 4-5 Keycards, Master Keycard (rare) | Highest-level access |
| Crystal Approach | Level 5 Keycards, Adrenaline Shots | Final area items |
| Hidden Caches | Master Keycard, Rare charms | Extremely valuable hidden items |
Strategy: Late floors have the rarest items but also the most dangerous entities. Balance thorough searching with awareness of your surroundings.
Hidden Item Locations
Some of the most valuable items in Pressure are hidden in non-obvious locations. These require careful exploration to find.
| Hidden Location | What You Can Find | How to Access |
|---|---|---|
| Behind breakable walls | Keycards, Medkits, Rare items | Look for cracked or damaged wall sections |
| Under desks | Level 2+ Keycards, Documents | Crouch and look beneath furniture |
| Inside ceiling vents | Flash Beacons, Necrobloxicon | Look up — some vents are accessible |
| Behind bookshelves | Master Keycard (extremely rare) | Search library and office areas |
| In flooded rooms | Rare items on floating debris | Use glowsticks to see underwater items |
| Behind paintings/posters | Hidden switches, secret codes | Interact with wall decorations |
| Inside locked lockers | High-level keycards, Rare items | Use a Lockpick to open |
Hidden Item Detection Tips
- Scan rooms slowly — items have a faint glow that’s easier to spot when you’re not rushing
- Check vertical space — look up at shelves, vents, and ceiling areas
- Interact with everything — some items require pressing E on objects that don’t look interactive
- Listen for audio cues — rare items sometimes emit a subtle sound
- Don’t skip rooms — even seemingly empty rooms may have hidden items in corners
Item Management Strategies
Effective item management can mean the difference between reaching Room 100 and dying at Room 75.
Inventory Priority System
| Priority | Items | When to Drop |
|---|---|---|
| Keep Always | Flashlight, highest-level keycard, bandages | Never |
| Keep When Needed | Glowstick, Medkit, Lockpick | When you find a replacement of the same type |
| Swap Freely | Lower-level keycards, extra bandages | When inventory is full and you find something better |
| Drop if Necessary | Lantern (if you have flashlight), extras | When you need space for a critical item |
Efficient Searching Routine
- Enter room and locate lockers first (your escape routes)
- Scan for light sources — pick up a flashlight if you don’t have one
- Search desks and surfaces (highest item spawn rate)
- Check cabinets and shelves (second-highest spawn rate)
- Look in corners and under furniture (hidden items)
- Only then proceed to the next door
Multiplayer Item Sharing
| Scenario | Recommended Action |
|---|---|
| Teammate has no flashlight | Give them yours and find another |
| You have duplicate keycards | Share with teammates who need them |
| Teammate is low on health | Give them your bandages or medkit |
| Inventory full, teammate needs items | Drop your lowest-priority item |
| Found a Master Keycard | Give it to the player leading the group |
Puzzle-Solving Tips and Tricks
General Puzzle Strategy
| Tip | Why It Works |
|---|---|
| Read every document | Documents often contain puzzle solutions or hints |
| Search the entire room | Puzzle clues are always in the same area as the puzzle |
| Don’t rush | Failed puzzle attempts can trigger alarms or entity spawns |
| Use process of elimination | For code locks, try logical patterns before random guessing |
| Listen for audio feedback | Many puzzles give audio cues for correct/incorrect answers |
| Know your enemies | See the Entities Guide for entity behavior during puzzle-solving |
Time Management During Puzzles
| Situation | Recommended Approach |
|---|---|
| Entity warning during puzzle | Abandon puzzle, hide first, return after entity passes |
| Teammate needs help with puzzle | Coordinate — one person solves, others watch for entities |
| Multiple puzzles in sequence | Solve them in order — later puzzles may depend on earlier solutions |
| Timed puzzle with entity threat | Only attempt if you’re confident — failing wastes more time than skipping |
FAQ
Q: How many keycard levels are there in Pressure? A: There are 6 keycard types: Level 1 through Level 5, plus the legendary Master Keycard. Each level unlocks progressively more secure doors.
Q: Can I carry unlimited items? A: No, you have a limited inventory. Prioritize essential items like your flashlight, keycards, and healing supplies. Drop lower-priority items when you find something more valuable.
Q: Where is the best place to find Level 3+ keycards? A: Level 3+ keycards are most commonly found in security checkpoints, medical bays, and heavy containment areas (Rooms 40+). They’re also occasionally hidden in locked lockers that require a Lockpick.
Q: What happens if I enter the wrong code too many times? A: Most code locks have a limited number of attempts (typically 3). Exceeding this limit may trigger an alarm that attracts nearby entities, or permanently lock the door. Search the room carefully before attempting any code.
Q: Do puzzle solutions change between runs? A: Some puzzle solutions are randomized each run (like code numbers), while others follow consistent patterns (like lever sequences). Always search for clues in the current run rather than relying on memory alone.
Q: Can I solve puzzles without keycards? A: Some puzzles are independent of keycards, but many locked doors require both a puzzle solution AND the appropriate keycard level. Make sure you have the right keycard before attempting to solve a door puzzle.
Q: Are there items exclusive to multiplayer? A: Some items are easier to obtain in multiplayer (like items in hard-to-reach areas), but there are no items that are strictly multiplayer-only. However, multiplayer puzzles require multiple players.
Q: What is the Necrobloxicon and how do I use it? A: The Necrobloxicon is a rare utility item that reveals hidden entity locations. Use it before entering a new room to scout for nearby threats. It’s most valuable in late-game areas where entity encounters are more frequent.
Q: How do I find the Master Keycard? A: The Master Keycard is extremely rare and typically found in hidden locations behind breakable walls, in secret rooms, or as a reward for completing specific challenges. It’s not required for progression but makes the game significantly easier.
Next Steps
Ready to master the Hadal Blacksite? Check out our other Pressure guides:
- Pressure Beginner Guide — Complete walkthrough for new players, covering the core game loop, entity basics, and room types
- Pressure Common Mistakes Guide — 15 things new players get wrong and how to fix them
- Pressure Codes and Secrets Guide — Active codes, easter eggs, and hidden content
- Pressure Entities Guide — Detailed bestiary of every monster, warning signs, and survival strategies
- Pressure Floors and Locations Guide — Room types, floor layouts, and zone-specific strategies
- Pressure Multiplayer Guide — Co-op strategies, team roles, and communication tips
- Pressure Survival Tips Guide — Advanced strategies for reaching the deepest floors
Disclaimer: This guide is based on the Pressure game state as of May 2026. Game updates may add new items, puzzles, or keycard types. Always check the official Pressure Wiki for the most up-to-date information.
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