In the first level of the game, players can find a secret door by shooting a specific wall section. To access the door, players need to shoot the wall section located at the end of the level, just before the exit. The door leads to a room containing a significant amount of ammo and health.

This is a big one. Your ability to see those red arrows might depend on your character's stats. If you've built a low-wisdom, tunnel-visioned bullet hose, the game may not show you these helpful hints at all, making secret hunting much harder . Invest in Perception if you want to see them.

: In the kitchen area, walk directly through the metal freezer door in the back. It looks locked but is actually an illusion hiding a massive cash stash. Mission 5: The Weapon Depot

: Any wall showing fractures or structural damage can be destroyed with explosives or heavy gunfire.

Use this quick-reference checklist to ensure you've found every secret:

Which specific are you currently stuck on or trying to find a particular weapon secret in?

Walk straight into the dark, pulsing organic wall structure located south of the first main chamber; it is an illusionary wall.

So reload your shotgun, check those cracked walls, and remember: in this game, the best weapon is a paranoid eye.

: Many late-game secrets require pressing a specific computer terminal on one side of the map to open a door on the exact opposite side. Always backtrack if you hear a hydraulic door sound after clicking a screen. Tips to Maximize Secret Hunting

In the initial outdoor courtyard, walk behind the large satellite dish structure on the right side of the screen. A hidden armor vest is tucked out of sight.

: Inside the alien-infested cavern, look for a glowing purple crystal formation. Shoot it down to uncover a hidden strength implant.

Before we get down to business, here are a few essential things to keep in mind as you search: