Abyssus is a fast-paced first-person shooter with roguelite progression set in a brinepunk underwater world. Players take on the role of Brinehunters who descend into the ruins of a corrupted sunken civilization, using brine-powered weapons and divine abilities to fight through waves of enemies and reach the surface again.
Gameplay
The core loop centers on selecting a loadout before each run, then navigating hand-crafted combat encounters that emphasize responsive gunplay and movement. Weapons feature multiple fire modes that can be further customized through mods, while blessings and charms allow players to layer elemental effects, status enhancements, and ability upgrades onto their chosen setup. Movement includes double jumps and directional dashes that keep combat mobile, and encounters often require clearing rooms of corrupted guardians before advancing. Health management relies on syringes and environmental pickups, with co-op scaling enemy numbers and health to maintain challenge across player counts.
Character customization extends beyond cosmetics to include suit and helmet choices that influence visual identity, though the focus remains on mechanical loadout decisions. Runs reward experimentation with different weapon and ability combinations, supported by meta progression that unlocks new options over time. The brinepunk theme influences both the aesthetic of ancient tech weaponry and the mysterious power source that fuels abilities.
Game Modes
The primary activity is the Expedition, a structured descent through four escalating areas filled with combat rooms, elite encounters, and boss fights. Players can adjust difficulty via a Deep Water Level system that introduces tougher mechanics and rewards. Optional modifiers expand variety: Twisting Chasm randomizes area order with scaled enemy stats, while Bottomless Chasm enables looping through areas for extended runs against stronger foes.
Expeditions support solo play or online co-op for up to four participants, with matchmaking and lobby tools available. In co-op, enemy scaling adjusts dynamically, and certain objectives benefit from team coordination such as reviving downed allies or handling multi-player room goals. No separate competitive or story-driven modes exist beyond these roguelite expedition variants.
Progression and Builds
Each run offers opportunities to collect blessings at altars that slot into primary fire, secondary fire, or ability slots, creating layered power spikes. Additional systems include charms for passive bonuses and forge mods that further refine weapons and skills. Over multiple expeditions, players unlock permanent advancements that expand available choices without carrying over between individual runs.
Enemy variety includes dozens of distinct types alongside multiple bosses with pattern-based fights. Procedural sequencing of hand-crafted rooms ensures no two expeditions follow the exact same path, encouraging repeated attempts to refine builds and strategies.
Is It Worth Playing?
Abyssus delivers a focused co-op FPS roguelite experience centered on tight combat and build experimentation. It has received Very Positive reception on Steam from thousands of reviews, reflecting strong player approval of its gun feel and replayability. Free content updates continue to add areas, bosses, skills, and features such as crossplay support following the console release.
The game suits players who enjoy short-to-medium session runs with friends or solo, where loadout variety and procedural elements provide ongoing engagement. Those seeking deep narrative or additional modes beyond expeditions may find the scope narrower. All major content updates remain free for owners, making the base experience the complete package for its target audience.
