The Free Prequel

https://store.steampowered.com/app/2139870/Skelethrone_The_Prey/

About This Game

• Metroidvania - Unlock unique upgrades for movement and combat to expand the world. Maintaining the game's progression requires you to use different relics, items and abilities.
  
• Challenging bosses - Test your skills against multiple bosses and other creatures from the Dark Ages. The game will constantly test your patience as you face challenging battles that require their own unique approach.
  
• Combat galore - You must use an ever-expanding arsenal of weapons and equipment to repel a wide variety of enemies. Put your courage, skills, and resolve on display for them.
  
• Exploration - The game features a huge world represented by a variety of hand-crafted levels. From fog-shrouded ruins, where undead corpses cling to any living being passing by, and shambling figures emerge. To the Sun-city that hides in the labyrinthine of an ancient tomb where an unspeakable evil lingers, long forgotten by mankind.
  
• Non-linear exploration – Play through levels and bosses, discover side areas with more secrets and enemies to defeat.
  
• Weapons and Equipment – Your character can be armed with bows, scythes, longswords, whips, pistols, rifles, and many more traditional weapons. More exotic weapons will also be available to you, so use any means to achieve success.
  
• Multiple Endings – Make key decisions along the way to determine Ericona's fate as you progress through the story.

Mature Content Description

The developers describe the content like this:

Players can expect 2D pixel-style violence, nudity, and blood.