Marrow

Marrow is a 2D cosmic-horror metroidvania about 12 years old boy named Daniel and his quest to find and rescue his orphaned friends that have mysteriously gone to the depths of Mountain.

Marrow mix classic platformer elements (such as Metroid or Ninja Gaiden) with a bit of "survival-horror", including brutal and agressive enemies, non-rewarding combat and rare checkpoints. It also has "soulsborne'ish" enemy respawn system, that is to say most of the killed enemies are dead until you get to the checkpoint (though there's a few types of foes that keep respawn permanently).