Abyssus has been marketed primarily as a co-op roguelite shooter, but it’s fully playable on your own. In fact, many players find solo runs easier than co-op in some respects. Fewer enemies with smaller health pools mean fights are quicker, more focused, and less overwhelming. You’ll also only have to manage your own positioning and cooldowns instead of trying to coordinate around multiple players. So, if you’re just starting out, this guide explains how to play Abyssus solo and covers the best strategies to maximize your survival.

Abyssus Where to Find Keys to open locked chests and vault doors
Abyssus: Where to Find Keys

If players are wondering how to obtain Keys to open Chests and Vaults in Abyssus, here's how to find these items.

How To Play Abyssus Solo

How To Play Abyssus Solo

Abyssus is designed to be played as a solo experience or with friends. The game dynamically adjusts its difficulty based on the number of players, so if you play alone, it will automatically scale down the number and aggression of enemies.

If you launch the game and start a new run without inviting any friends, the game will automatically place you in a solo instance and scale the difficulty of enemies to your party size of one.

Tips for Playing Abyssus Solo

Like any roguelite, Abyssus leans on meta progression. This means you’ll unlock permanent upgrades, weapons, and abilities over time. If you’re playing solo, here are some tips to help you out:

Manage Your Resources Carefully

Healing in Abyssus

Without teammates to revive you or share pickups, every syringe, coin, and chest matters more. Save healing syringes for elites and late-stage bosses, and always sweep rooms for gold before moving on. Solo players especially benefit from survival upgrades, like max health and syringe improvements, as they extend runs and give you more practice.

Dash, Jump, Live

Movement is your greatest weapon in Abyssus. Your explorer has a surprisingly mobile base kit, including a double-jump and unidirectional dash both on the ground and mid-air. Enemies hit hard, but their attacks are usually fair and avoidable if you stay in motion. Circle strafe, weave, and constantly reposition to avoid getting cornered. Staying still for even a moment is the fastest way to die.

Just because you’re playing solo doesn’t mean you’re alone. The arenas in Abyssus aren’t just empty rooms: you can use the environment to your advantage.

Use Your Special Ability Often

Special Ability Abyssus

Unlike consumables, your special ability continuously recharges, meaning you can use them quite often. You start with grenades, but as you progress, blessings can evolve your special into powerful tools. Don’t hoard it though; instead throw it into fights every time it’s ready to keep pressure off yourself.

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Abyssus Tag Page Cover Art
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FPS
Roguelite
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Systems
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Released
August 12, 2025
Developer(s)
DoubleMoose Games
Publisher(s)
The Arcade Crew
Multiplayer
Online Co-Op
Number of Players
Single-player
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WHERE TO PLAY

DIGITAL
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Genre(s)
FPS, Roguelite