Abyssus is a cooperative first-person shooter with strong roguelite elements. Developed by Crimson Star Games and released in early 2025, the game tasks one or two players with navigating procedurally generated levels within a hostile mechanical abyss. Key features include a wide array of unique weapons, hidden powerful abilities, extensive equipment modification, and two-player online co-op. The title is available on PC and major console platforms.
Abyssus Wiki and Guides
In the unforgiving world of Abyssus, having the right information is everything to ensure survival and success. This page is the central hub for all our detailed guides, expert strategies, and secret knowledge for Abyssus. Whether you’re making your first run or perfecting your arsenal, you will find all the answers you’re looking for in our expertly crafted guides.
Start your journey ahead of the curve by exploring our core guides below.
How to Unlock Weapons
Build your arsenal in Abyssus. In this guide, you’ll find the locations and unlock conditions for every weapon, from starting gear like the Shotgun to the Disc Thrower hidden behind secret crystals and the mysterious Fish Deity unlocked via special tasks. Learn how to obtain each weapon step-by-step.
How to Unlock Abilities
Weapons alone are not enough. This guide reveals the four powerful secret abilities that will completely change your playstyle: the Turret found in Act 1, the Anchor behind locked doors in Act 2, the Ancient Core requiring 6 artifacts, and the Brine Field at the peaks of Act 3. Discover how to find these essential abilities.
View the Abyssus Abilities Page
Mods and Upgrades
Take your equipment to the next level. This comprehensive guide lists all the challenges required to unlock the special mods for each weapon and ability. From killing four enemies in a single shot to taking down an elite in under 20 seconds, all the tough mod-unlocking challenges and their strategies are here.
View the Abyssus Mods and Upgrades Page
Surge Fissures
Surge Fissures are mysterious, hidden orbs of Brine scattered across every region of the abyss, from the pre-game Lobby to the deepest chambers. Hunting down these glowing collectibles is a key part of exploration and is essential for any player aiming for 100% completion.
Why should you find them? The rewards are purely cosmetic but highly sought-after. For each full set of fissures you collect within a region (such as the Gardens or Sanctuary), you’ll be rewarded with exclusive suit material colors for the Nautical Wardrobe, allowing for deeper character customization. Furthermore, finding them all is a requirement for unlocking several biome-specific achievements.
Key Gameplay Information
Permanent Upgrades: Learn how to efficiently use the Furnace and Soul Wheel systems to grow permanently stronger with every adventure. Choosing the right upgrades is vital for a successful run.
Game Structure: Abyssus is divided into main sections called Acts, each with distinct biomes and enemies. Every Act is composed of sub-stages called Depths and culminates in a powerful Boss fight.