Tool and keycard checklist

Story spoilers ahead. The central equipment chain is Rebreather + Rope Gun → Shovel → Maintenance A → Maintenance Keycard. Some preparation can be done in parallel; this is not the only possible visit order.

Use the Maintenance card in the northwestern Food and Dining Bunker, then progress through the hydroponics and flooded area for the VIP Keycard and discovery laptop. Prepare for the Puffton couple in the dining room. Its exit leads through a window into water.

In Entertainment, use the Maintenance card to enter the deeper area. Follow the gym, spa, atrium stairs and upper pool to the nightclub. Beyond the bar, the fourth seating alcove on the right holds the Guest Keycard on its central table.

Open Luxury from Residential

Take the Guest Keycard to Residential beside the eastern large lake. Progress through the story and locate the surveillance control room. Press Open on the control to unlock Luxury’s entrance.

You may collect Ancient Armor and prepare the Pickaxe/Solafite resources earlier when equipped to do so.

Plate the armor before the Golden Door

In Luxury, continue to the bathroom wall opening and Golden Door. Collect the Armor Plating Blueprint from the skeleton nearby, then build the Armor Plater in a position you can defend.

Insert Ancient Armor and 12 Solafite, defend the cycle and collect the upgraded outfit. The Ancient Armor guide gives the construction materials and cave route. Equip the plated armor before opening the Golden Door.

Older 2023 overviews omit plating. That omission should not be carried into a full-release ending walkthrough.

Complete the cave and beach sequence

Proceed through Hell Cave, dealing with demons and the larger demon encounter. Continue through the subsequent story sequence, then face the final enemy on the beach. This guide does not prescribe an unverified guaranteed grenade count or combat exploit.

Leave or stay

Choice Result relevant to this guide
Board the helicopter End this island journey by leaving.
Stay Continue surviving and unlock the blue-beam cave containing the final Artifact piece F.

If collecting the Artifact is your goal, make a separate save before the choice and choose stay.

Companion participation depends on survival and relationship conditions. Choosing to leave alone is not a guarantee of every companion achievement. This route covers progression and the two choices, rather than all hidden endings or achievement conditions.