Subterranean

A menagerie of winding caves, fissures, irrigation devices and old subway tunnels that make up this area, populated by creatures from throughout slugcat´s journey. Acting as a collection of all of the player´s achievements up until that point, this is the last region the player will journey through on their quest. Subterranean has two subregions; The Depths and the Filtration System. The lower area of Subterranean has four entrances to the Filtration system, scattered along the lower reaches of the Caves.

Filtration System is essentially a downward climb, but difficult in that almost the entire subregion is one giant labyrinthine crawlspace, which makes dodging the sound-sensitive Black Lizards far more difficult. At the very bottom of the Filtration System lies a single tunnel to The Depths, where the slugcat will be able to Ascend. This completes the game.

Subterranean has three gates to other regions, the top left and right leading to the Farm Arrays and Shoreline, respectively, along with a gate to Drainage System at the very top of the Filtration System.

Subterranean- Easy and Normal Mode-

 * Green Lizard
 * Blue Lizard
 * Black Lizard
 * Pink Lizard
 * Wolfspider
 * Monster Kelp
 * Wormgrass
 * Salamander
 * Leviathan
 * Jetfish
 * Centipede
 * Eggbug
 * Scavengers
 * Scissorbird

Subterranean- Hard Mode-

 * Cyan Lizard
 * Tranquilla
 * Red Centipede

Filtration System- Easy and Normal Mode-

 * Black Lizard
 * Blue Lizard

Filtration System- Hard Mode-

 * Tranquilla
 * Wolfspider

The Depths- All Modes-

 * Guardian