This Abyssus guide provides a detailed, organized breakdown of how to unlock all mods for every weapon and ability in the game. Each weapon is covered in its own section to make finding the information you need easier.
Table of Contents
Weapon Mods
This section details how to unlock the mods for each weapon in the game. Remember, you must first own a weapon before you can unlock its mods. If you are looking for how to obtain the base weapons themselves, please refer to our main Abyssus All Weapons and Locations page.
Power Rifle
A versatile and reliable assault rifle suitable for any situation.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Burst Fire | Complete a full run with the Power Rifle equipped. | No special strategy is needed for this mod; simply finish the game with this weapon. |
| Fire Barrage | Kill 15 enemies without reloading. | To guarantee this, exclusively use the secondary fire (RMB), as it does not consume ammo. |
| Shrapnel Shot | While the Power Rifle is equipped, kill 30 enemies with your grenade ability. | Focus on groups of enemies. Ensure your grenade gets the kill, not your weapon. |
| Concentrated Shot | Kill five enemies simultaneously while the weapon is in its overheated state. | Group enemies together, intentionally overheat the weapon, and then use a grenade or the Anchor ability to eliminate them all at once. |
Shotgun
A powerful weapon that deals devastating damage at close range.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Superheavy Slug | Complete a full run with the Shotgun equipped. | It is sufficient to finish a run using this as your primary weapon. |
| Full Auto | Kill four enemies with a single shot. | Go to a challenge room where enemies continuously respawn. Weaken small enemies (e.g., golemites), gather them, and hit them with a secondary fire (RMB) blast. |
| Discharge | While the Shotgun is equipped, kill 30 enemies with your melee attack. | Keep the shotgun in your hands and focus on finishing off weak enemies with only your melee attack. |
| Pressure Shot | Accumulate a total of 1000 meters in knockback distance using only the secondary fire. | This mod will unlock over time. Focus on using the secondary fire consistently throughout your runs. |
Tesla Cannon
A master of crowd control, capable of clearing large groups with chain lightning damage.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Unstable Coil | Complete a full run with the Tesla Cannon equipped. | Finishing the game with this weapon will unlock the mod. |
| Charging Beam | Obtain a Fire blessing and set enemies on fire 100 times. | Prioritize picking up a Fire blessing when you find one, then hit as many enemies as possible. |
| Charging Sphere | Hit enemies a total of 200 times with a single secondary fire orb. | Find a room with healing flowers. Lure enemies near them without destroying the flowers and launch your orb. As the flowers heal the enemies, the orb will hit them repeatedly. |
| Magnetic Storm | Hit 7 enemies simultaneously with a single shot. | Killing them is not required. This will likely unlock naturally while attempting the “Charging Sphere” challenge or in any densely packed room. |
Revolver
A precision weapon that rewards careful aim with high burst damage.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Large Caliber | Complete a full run with the Revolver equipped. | You can unlock this mod by completing an entire run with the Revolver. |
| Burst Fire | Kill 10 enemies without releasing the aim-down-sights (ADS) button. | This can be easily completed in a single room against weak enemies by holding down the aim button. |
| Speed Aiming | Land the killing blow on 3 different main bosses by shooting their weak spot while in ADS. | Elite enemies do not count towards this challenge. You must target the main bosses. |
| Charged Scope | Deal 1000 overkill damage with a single shot. | Stack damage-increasing blessings and amulets. You can complete this by landing a powerful shot on a low-health enemy. |
Disc Thrower
Launches ricocheting discs that can hit multiple enemies and targets from unique angles.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Fan of Fire | Complete a full run with the Disc Thrower equipped. | Finishing a run with this weapon is all that is required. |
| Dynamo | Hit 5 enemies simultaneously with the secondary fire’s explosion (RMB). | Gather a group of five or more enemies and detonate the secondary fire in the middle of them. They do not need to die. |
| Electronic Conductors | Kill 50 enemies with lightning damage. | Find a Lightning blessing and let the chain lightning effect do the work. |
| Find and Destroy | Hit enemies 50 times with your discs within a 5-second window. | The “Fan” amulet makes this trivial. With it, you can rapidly fire enough discs to get 50 hits on a single boss or in a crowded room. |
Combat Bow
A silent, high-damage weapon that rewards precision and timing.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Piercing | Complete a full run with the Combat Bow equipped. | Simply finish the game with the bow to unlock this mod. |
| Arrow Cycle | Hit an enemy with 30 consecutive arrows without missing. | This is easiest to do against a large boss. Use the rapid secondary fire (RMB) at close range to ensure you don’t miss. |
| Explosive Arrow | Equip the “Piercing” mod and kill three enemies with a single, piercing arrow. | Line up three weak enemies and fire a fully charged shot to pierce and kill them all at once. |
| Smart Arrow | Hit enemy weak spots 200 times. | This will unlock naturally over a single run if you consistently aim for critical spots. |
Plasma Cannon
Fires powerful plasma projectiles that excel at area-of-effect damage.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Anti-Aircraft Cannon | Hit enemy weak spots 30 times. | This can be done with either the primary or secondary fire and should come naturally. |
| Seekers | Kill four enemies with a single shot. | Weaken four enemies with melee attacks, group them up, and then finish them with one shot. |
| Sticky Compound | Complete a full run with the Plasma Cannon equipped. | Finishing the game with this weapon will unlock the mod. |
| Void Infusion | Equip the “Seekers” mod. Lock onto four enemies with the secondary fire and kill them in a single volley. | With the “Seekers” mod active, simply target four enemies at once and fire. |
Fish God
A unique weapon with unconventional attack patterns.
| Mod Name | Unlock Requirement | Tips & Strategy |
| Spit of Fishy Fury | Hit an enemy from the opposite side of the map. | In a long, open room, simply stand at one end and shoot an enemy at the far end. |
| Dangerous Goop | Hit 5 enemies simultaneously with the secondary fire (RMB). | Gather a group of five or more enemies and hit them with the secondary fire. They do not need to die. |
| Sweeping Blow | Complete a full run with the Fish God weapon equipped. | Beat the game with this weapon to unlock its mod. |
| Chainsaw | Kill an elite enemy in under 20 seconds. | Save your powerful cooldowns and spirits for the first elite you encounter. This is easier to do in co-op. |
Ability Mods
To unlock these mods, you must first have the corresponding ability unlocked. If you haven’t found them yet, please refer to our Guide to Unlocking All Abilities in Abyssus.
| Ability | Mod Unlock Requirement | Tips & Strategy |
| Grenade | Throw 8 grenades within 5 seconds. | Invest in extra ability charges at the Soul Upgrade Wheel. After defeating an elite with grenades, your charges are instantly restored. Immediately throw them again. |
| Turret | Deploy 8 turrets within 5 seconds. | The strategy is identical to the Grenade. Getting instant charge restoration after an elite kill is key. |
| Brine Field | Increase the field’s area of effect to 40 meters. | Select the “Area Expansion” upgrade at the Furnace. During your run, stack “Wind” blessings to further increase the radius until it hits the 40-meter goal. |