Here's the less common enemy for Shattered Pixel Dungeon's upcoming gnoll variant of the caves quest: Gnoll Sappers!
Sappers don't have any magic of their own but do have access to various earth-moving gadgets. They spawn with some nearby barricades, traps, and a guard. They specialize in disruptive AOE attacks and heavily buffing the defense of their guard. You'll want to try and use the sapper's abilities to your advantage to get the upper hand.
Expect to run into three of them each time you do the quest, just like with crystal guardians for the crystal variant.
Thank so much for all the work on the game, all the updates are amazing and really keeps me locked in. I can't wait. Best mobile game ever!