A total of four Red Keycards can be found spread across the Black and Red Zone. One is found in a small structure opposite a large gap, proceeded by a count-based button puzzle. Two buttons on the structure itself must be activated, one of which is guarded by a Proximity Mine. Once Haydee exits the room, several Slashers will ambush her.
A second Red Keycard is found behind a locked door, after a T-Junction populated by two Walkers. To unlock the door, Haydee must navigate a dark maze in a ventilation system and place a Remote Device on a button at the end of it. Activating the Remote Control once back on the locked door's side will open it and allow Haydee to retrieve the card after destroying a waiting Slasher.
A third Red Keycard is found on Floor C's interior in the Black Zone. A Remote Device must first be placed in the power room opposite, accessed earlier in the complex. This will allow Haydee to unlock the door to the card; however, stepping too far into the room will release four Walkers, easily killing her in the confined space. A button in one of the Walker's cages will deactivate the detection system, to allow her to exit it once dealing with the attackers.
A fourth Red Keycard is found on the Black Zone Ground Floor. After destroying four Slashers and solving a button puzzle, Haydee can drop down to a room filled with many Haydee corpses, apparently being cremated, and a single Walker. The Red Keycard is found on one of the bodies, along with a Yellow Keycard needed to escape the room.
All Red Keycards are used in the Red Zone themselves, to unlock small cage accessed by a platforming section utilising toggleable platforms. Inside the cage is a Blue Keycard, which will cause two Slashers to ambush Haydee immediately after being retrieved. Haydee is then forced to travel a longer route to return to the main Red Zone, facing many enemies along the way.
|Weapons||Pistol • Magnum • SMG • Proximity Mine|
|Tools||Crowbar • Pliers • Power Node • Remote Devices • Screwdriver|
|Consumables||Ammo • Diskette • Medkit|
|Wearables||Armored Vest • Night Visor • Respirator|
|Keycards||Red • Orange • Yellow • Green • Blue • Purple • White • Pink|