Escape the Underground (itch) (Sleepy Vampire Games)

At the bottom of a massive underground dump, a sentient pile of sludge is born. After finding a discarded book that shows photographs of the surface, they decide to make the journey upward to see the outside world.

Escape the Underground is a time-attack, difficult platformer that centers around the Sludge's innate ability to cling to walls.

-Play through 28 levels to make your way toward the surface.
-Retry levels to bring your time down and beat them as fast as possible!
-Can you find the secret mode after completing the game?