J-Lab guide: certificates, colour card rooms and Roadblock

Enter J-Lab through the door in the Farm Town Office Building basement with a Lv.1 J-Lab Certificate; the certificate is used up. Inside, the route to the Storm Area runs in four steps: turn on the B1 power lever, open the B2 room with a Lv.2 certificate, pull its lever to open Roadblock’s arena, and kill Roadblock for the Lv.3 certificate.

Getting a Lv.1 certificate

• Xiaoming’s quest chain Mysterious Door, Mysterious Door Key and Copy Pass ends by letting you buy Lv.1 certificates from him for 2,000 (stock 3).
• One always spawns in the Farm Town Hidden Mine; others turn up around the Gas Station.
• The Farm Town Mysterious Merchant sometimes stocks them.
• Wanderers inside J-Lab drop certificates; update 1.0.30 raised the rate, especially for Lv.2.

Jeff’s Unlock Beacon IV (level 9) has you activate the beacon in the easternmost room of B1. After that you can teleport in without a certificate.

The route to Roadblock

1. Power: the lever in the B1 Power Control Area turns on B2. Until then B2 is dark and its electronic doors stay shut.
2. Lv.2 room: on B2, a door takes a Lv.2 J-Lab Certificate (used up). One Lv.2 certificate always spawns on B1. The room holds invisible enemies and the Black Spider-Bot; a T-7 Thermal Sight or Blindfold shows the invisible ones. Killing one earns the achievement What a Surprise.
3. Lever: the lever in that room opens Roadblock’s arena in the north-west of B1, once per activation.
4. Roadblock: 400 health, Lv.4 Body Armor and his own helmet, and a ×3 damage multiplier on everything he fires. Bring Advanced AP Bullet (AR): 27 rifle hits instead of 40 with AP rounds. He stops moving while he fires, so strafe between bursts. He always drops the Lv.3 J-Lab Certificate; take it first. An extraction point sits next to his arena. The boss guide covers the fight.

The Lv.3 certificate opens the Storm Area gate in Ground Zero. Since update 1.3.12 the J-Lab Teleport Zone is a second route there, opened with the Lab Area Teleport Zone Key found in the Storm Area.

Colour card rooms

Room	Floor	Inside
Blue	B1	Color Monitor blueprint
Red	B1	Advanced AP Sniper Bullet blueprint on the first visit, chance of a Space Protection Helmet
Green	B1	T-7 Thermal Sight blueprint, electronics
Purple	B2	SLI graphics card blueprint and two J-Lab crates
Yellow	B2	Weapons and attachments
Black	B2	DT MDR-762 blueprint and injectors

Cards come from Farm Town’s Mysterious Rooms X and O, fixed low-chance spawns (Red 10%, Green and Yellow 7% at their spawn points), and the Farm Town Mysterious Merchant (black card 203,700). All colour cards can be registered at the bunker’s Key Registration Device. A bookshelf on B1 hides a room with the L Advanced AP bullet blueprint, and the Screening Room key opens the room where the Duck Miner cartridge spawns.

J-Lab crates

The blue J-Lab crates hold lab-only materials such as Crystal Filter Units, Crystal Boosters and Accelerators. Update 2.0.26 raised the crate item limit to four, and update 1.3.10 added J-Lab crates to the Storm Area too.