Cave Crawlers (Patreon)

Here's a sneak peek at my (very crude) testing room.

And yep, that's an actual monster. The Cave Crawler. They are worm-like creatures found in the rocky areas of Heon's underground. They tunnel through stone, being a pain in the a for Iron Division's mining bases. 

In terms of gameplay, the Crawler is similar to the Pinkie Demon from Doom. It is decently resilient and dangerous in numbers, being able to soak up a bunch of damage. However, it can also shoot out balls of slime while approaching the player, making it more versatile.