Example Hidden Cache Locations:

Chapter 4: The Below

• Cache: "Maintenance Tunnel Stash"
  • Location: After navigating the initial flooded tunnels, you'll come to a section with several pipes. Look for a small, partially submerged side tunnel on the left that seems to lead nowhere. Crawl through it.
  • Contents: 250 Credits, 1x Health Injector, 1x GRP Battery.
  • Strategy: This area is often overlooked due to its dark and claustrophobic nature. Be prepared for a potential single biophage lurking inside.
• Cache: "Security Office Lockup"
  • Location: In the security office area where you restore power. There's a locked door requiring a Fuse. The Fuse is located in a vent directly across from the locked door.
  • Contents: 500 Credits, 2x Health Injectors, 1x Biophage Organ (sellable for credits).
  • Strategy: Be prepared for a potential ambush by a single biophage upon opening the door.

Chapter 5: Lost

• Cache: "Collapsed Corridor Cache"
  • Location: After Jacob uses the GRP to clear a path through a collapsed corridor, instead of immediately proceeding, look for a small crawl space on the right, hidden behind some debris.
  • Contents: 350 Credits, 1x Health Injector, 1x Reforge Credit Chip (worth 200 credits).
  • Strategy: Requires careful observation and willingness to backtrack slightly after clearing the main path.
• Cache: "Ventilation System Storage"
  • Location: In a large ventilation shaft area where you need to drop down. Before dropping, look for a side vent that leads to a small, isolated storage room.
  • Contents: 700 Credits, 1x GRP Battery, 1x Biophage Organ.
  • Strategy: This area is often missed because it's off the direct path and requires a slight detour in a precarious environment.

Optional Combat Encounters & Elite Biophages

While most combat encounters are mandatory, certain areas or side paths may lead to optional, more challenging biophage encounters. These often involve stronger variants, multiple enemies, or unique environmental hazards. Overcoming these challenges usually rewards you with a significant amount of credits, rare resources, or even weapon schematics.