Armatus is a thrilling third-person roguelite shooter that immerses players in a demon-infested version of Paris. As the last warrior of an ancient order, players utilize a combination of powerful firearms and celestial abilities to navigate through the chaotic remnants of a once-bustling city. The objective is to find the elusive Sunless Gate, a gateway to salvation amidst the ruins. With each run, players face increasingly formidable demons, forcing them to adapt and evolve their combat strategies.

The gameplay revolves around the cycle of fighting, dying, and reviving, encouraging players to learn from their defeats. Armatus provides a rich experience where knowledge and skill are paramount. Players can customize their approach by selecting different weapons and enhancing their abilities through passive upgrades. This dynamic system promotes continuous progression, making each attempt to conquer the demons both challenging and rewarding.