Revenants
While I ran, a hologram suddenly popped up in front of me. It was risky, but I decided to stop to read it since I didn't hear the mechanical spiders anymore. After looking both ways, I sat down on the sand, leaning my back against the cold walls of the maze.
[NEW SPECIES ENTRY]
[Name: Revenants]
[Type: Machines]
[Weakness: None]
[Resistance: Physical Attacks, Hidden Arts]
[Description: Revenants are killing machines found within complex locations that are difficult to navigate (e.g. mazes). Their true origins are unknown. They can come in many different forms, the most common ones being spiders, snakes, and leopards. Revenants are resistant to all forms of attacks, and can only be injured via certain weakpoints on their bodies not covered by their near-invincible armor plating.]
Below was an image of the spider Revenants that I had encountered just now.