Skeletons on Skeletons (Gordon Doskas)

Skeletons on Skeletons is a souls-like action RPG where you explore dungeons and fight enemies to gain skills and collect gear.

You are a hero... were a hero. You died centuries ago fighting your nemesis, a powerful red dragon. A necromancer has arisen you both, along with an army  of the undead. You must set aside your differences to save the world from the skeleton apocalypse.