Clearance Level 4 route: craft the Tier 4 Keypad Hacker

What Level 4 clearance actually uses

The relevant item for a Level 4 keypad is the Keypad Hacker (Tier 4), not a one-use yellow-safe keycard. The current item entry describes a crafted device that hacks clearance Level 4 keypads and lower. It later upgrades into the Tier 5 device. The earlier version of this article invented a yellow-safe card in Containment Block DIRAC and sent players to retrieve it. The sources cited there did not establish such a card, its alleged safe, or a Bio-Acoustic Key at the entrance.

Keep the URL of this guide if you bookmarked it. The task it now solves is the real one: identify which gate requires Level 4, unlock the Tier 4 recipe, obtain the material your version shows, craft the hacker, and return to the exact door. That is a different journey from entering DIRAC or resetting the Labs security system. Confusing those goals causes unnecessary trips through several dangerous areas.

The Tier 4 device is reusable access gear rather than a collectible keycard you deposit in base storage. Do not plan around a random spawn point on a desk or in a wall safe. When you see an interactable keypad, read the clearance shown there. A gate's color, room name, or proximity to robots does not independently prove its required tier.

Identify the door before collecting anything

Begin with the door and journal, not with a shopping list. Record its location, the name of the sector, and the clearance in the interaction prompt. If it is a Level 4 keypad, this page applies. If it is a DIRAC gate controlled by an observation-room button, follow the DIRAC route correction. If it is a Tier 3 door toward another Labs destination, do not spend time crafting Tier 4 just to solve that earlier obstacle.

The Cascade Laboratories location page distinguishes several blocks and destinations. For example, the Particle Lab portal to Canaan is associated with a Tier 3 keypad after its flow modules are repaired. The same Labs reference identifies a Tier 5 security door toward Royal Range. Those are different requirements. Neither changes the tier printed on the Level 4 keypad you are trying to open.

The objective list also separates Labs, Security Sector, and later progression. Check your active objective before leaving the bench. If the goal is to open a shortcut, your stop condition is that one usable door. If the goal is story progression, opening a door may be only the first checkpoint. Do not assume that a successful hack unlocks every adjacent cell, removes all nearby enemies, or resets the security system.

Use this short record before departure:

This is an editorial checklist. The names of the device and destinations come from the cited game references; the four-field note is our own way to prevent backtracking mistakes.

Unlock and craft the Tier 4 hacker

The Wiki's Tier 4 hacker entry gives two ways to unlock the recipe: read the email titled "Clean it up!" and view its attachment, or talk to Celine Ahmed. Merely seeing an email title without opening the attachment is not the same as confirming that the recipe appeared in your crafting interface. When you think you have completed the trigger, check the crafting list at a Crafting Bench before spending another session looking for a keycard.

The device is obtained by crafting. It is not reported as a random drop from a safe, and finding a door with Level 4 clearance does not automatically provide the tool. Bring your existing hacker upgrade path to the bench and inspect the displayed recipe in the current build. The item entry notes a post-Dark-Energy recipe change: an earlier LCD Screen requirement was replaced with a Lodestone Fragment, making Canaan part of the progression path. Do not use an old recipe screenshot if the in-game bench displays a different material list.

For Canaan, the current world entry places its portal in the Particle Lab area of Cascade Laboratories. It says the Flow Control Modules are repaired with a Night Essence and Snag Vine Seed; the nearby portal keypad requires a Tier 3 Keypad Hacker. That order matters: the Canaan portal's Tier 3 access is a prerequisite to collecting a Lodestone Fragment for the later Tier 4 recipe, not evidence that Canaan itself needs Tier 4.

The Canaan source lists Lodestone Fragments as drops from Lodeites and Bogmen. Identify that exact material in your own crafting recipe. If you already have the fragment, there is no reason to repeat a world run solely because this page says Canaan is part of the usual path. If you do not have it, prepare a focused collection trip rather than trying to clear every optional branch. Keep the fragment in your inventory or confirmed storage until the crafting step is done.

After the unlock and materials are ready:

1. Use the bench and inspect the current Tier 4 recipe. Confirm that the recipe actually appears; if it does not, revisit the email attachment or the Celine Ahmed conversation.
2. Compare each displayed ingredient with the materials you own. The bench's current recipe is the final authority on quantities for your patch; this guide does not substitute a copied list of icons that might have changed.
3. Craft or upgrade to the Keypad Hacker (Tier 4) and verify that the device is available in its hacking-device gear slot.
4. Return to the exact Level 4 keypad you recorded, equip the hacker, and interact with that keypad. Confirm the door opens before treating the expedition as complete.

The condition to stop is visible and testable: your device is Tier 4, and your target keypad accepts it. If either is false, the route is not finished. This prevents a successful recipe unlock from being mistaken for a successful access run.

Clearance decision table

This table separates failures at the recipe, material, equipment, and door stages. A missing recipe is not fixed by another Canaan farming run. A missing ingredient is not fixed by reading the email again. A closed DIRAC gate controlled by a button is not fixed by upgrading a hacker above the prompt's requirement.

Prepare for the trip you are actually making

The previous article prescribed a complete Hazmat Suit, decoys, an X-Ray Lamp, and a Bio-Acoustic Key as mandatory for a supposedly timed keycard extraction. The reviewed sources do not define such an extraction. Gear should match the current route and visible hazards, not a fabricated universal list. A player collecting one recipe material in Canaan has a different risk profile from a player returning to a particular Security Sector keypad.

Choose a safe return point and enough food, water, healing, and equipment durability for the distance you intend to travel. Leave unneeded loot at a known bench or container so the target material and hacking device are easy to locate. If a robot or other enemy controls the approach, pause behind actual cover, watch its position, and choose a route that lets you return. Do not assume that robots all follow a fixed patrol or reset after a stated number of seconds; the earlier article asserted such a timer without evidence.

The X-Ray Lamp is relevant to specific anomaly threats such as the Leyak, not to the operation of a Level 4 keypad. If your route can encounter that threat, check the applicable item and enemy guides and bring the countermeasure. Otherwise, do not label the lamp a required ingredient for crafting or using the Tier 4 hacker. The same distinction applies to protective clothing: it can be wise for a radioactive zone, but it is not the documented unlock condition for every Level 4 keypad.

Avoid invented abort percentages. If gear is damaged, evaluate whether its remaining protection and your return distance leave a safe margin. If the route becomes unsafe before reaching the target, bank what you collected and repair. The goal is a repeatable two-way trip, not a forced one-attempt extraction.

Recover from a failed access run

If you died while collecting materials or returning to a gate, make corpse recovery its own objective. The Death page says main-inventory items are left in the player corpse; hotbar items stay with the player but take a durability penalty. A valid bed is an available respawn choice, not an automatic return to wherever you last slept. Check where your fragment and hacker were carried before assuming they were permanently lost.

Do not run back under the same conditions immediately. Replenish health and essential gear, note the last safe landmark, and approach the corpse with enough inventory capacity to retrieve its contents. If the hazard that caused death is still present, wait or choose another path rather than treating an imagined timed disengage window as guaranteed. Once the corpse is recovered, return to a safe point and re-evaluate the original Level 4 door objective.

If the recipe remains missing, test the actual unlock trigger again. If the ingredient remains missing, confirm which part of the Canaan route is blocking you. If the device exists but the door still rejects it, capture the exact interaction text: a different tier, unpowered mechanism, other-side gate, or a later story condition calls for a different guide. Do not keep searching for the fictitious yellow-safe card.

Return with a narrower objective

After crafting the Tier 4 device, return only to the keypad you identified at the start. Interact, verify the result, and note a return route. Then decide whether the next objective is a story push, a shortcut, or optional loot. Separating those stages avoids losing the device or the material in an unrelated exploratory run.

If the current obstacle is instead the DIRAC-to-Inner-Wing route, use the DIRAC access guide. If it is the longer sector route, use the Security Sector walkthrough. The Tier 4 hacker page answers one actionable question: how to unlock, craft, equip, and test the correct device against a real Level 4 keypad. It does not promise to open every containment cell or finish the game's later objectives in the same trip.