End of Abyss Walkthrough & Field Guide
A step-by-step navigational briefing for combat technician Cel across all subterranean sectors. Follow this guide to locate weapon upgrades, survive brutal boss encounters, and collect all 8 Data Cores for the true ending.
Chapter-by-Chapter Mission Log
Level 0: Surface Descent & Elevator Failure
Cel enters the primary atmospheric airlock of the Section 9 underground biome. Following a catastrophic elevator cable collapse, you are cut off from surface extraction.
- Retrieve Cel's primary Tactical Plasma Carbine from the Security Armory.
- Reroute emergency power to the hydraulic bulkhead door.
- Find Data Core #1 (Aether Memo 04) tucked behind the generator vent.
Level 3: The Hydroponic Bio-Dome Overgrowth
A lush yet deadly botanical garden engineered for deep-earth oxygen regeneration, now overgrown with mutagenic spores. Visibility is severely reduced; listen closely for chitinous audio cues.
- Acquire the Directional Thruster Dash module from the Botanical Research Lab.
- Boss Fight: The Hydroponic Matriarch. Focus fire on her glowing floral core when she channels spore clouds.
- Collect Data Core #2 & #3 in the water treatment filtration vaults.
Level 6: Geothermal Smelter & Machine Graveyard
The facility's power core. Narrow suspended metal catwalks over molten slag pits. Enemy types here feature heavy ballistic shielding and flamethrower appendages.
- Obtain the Heavy Arc Scattergun inside the automated manufacturing foundry.
- Boss Fight: Goliath Sub-Anomaly 04. Bait his ground slam to expose rear cooling valves, then unload point-blank shotgun blasts.
- Unlock Security Tier 3 Clearance to open previous fast-travel transit cars.
Level 10: The Abyss Core & Singularity Gate
The deepest point of the facility where biological matter and quantum computational architecture merge into a singular bio-digital consciousness.
- Equip the Mag-Pulse Rail Cannon.
- Final Boss: The Deep Core Architect. Survive three intense bullet-hell phases while switching platforms.
- Decide whether to initiate the Self-Destruct protocol (Ending A) or Upload the Data Cores (True Ending B).
Major Boss Encounters & Vulnerabilities
Tactical breakdown of the most dangerous apex entities roaming the subterranean research sectors.
Goliath Sub-Anomaly 04
Sector Gamma - Heavy Industrial Smelter
A massive biomechanical amalgam forged from industrial mining machinery and mutagenic bio-tissue. Swings high-torque crushing claw arms and emits thermal radiation shockwaves.
The Hydroponic Matriarch
Sector Beta - Botanical Bio-Dome
An aggressive parasitic entity deeply rooted into the bio-facility irrigation channels. Spawns swarms of airborne spore drones and sweeps the catwalk with thorned tentacles.
The Deep Core Architect
Sub-Level 10 - The Abyssal Void Gate
The cyber-synthetic consciousness controlling the entire subterranean complex. Warps reality, alters gravity plates, and summons holographic clones of past facility engineers.
Cel's Exosuit Weapon Loadout
Upgrade firearms and specialized munitions to pierce heavy chitin and synthetic bio-armor.
Cel's baseline service weapon. Reliable rate of fire, accurate at mid-range, with pinpoint recoil control for targeting alien weak spots.
Devastating close-quarters stopping power. Capable of shattering armored carapace on mutated heavy bio-mech stalkers in two clean blasts.
High-precision long-range railgun that punctures through reinforced facility blast doors and multiple hostiles in a straight vector.
Dual-mode projector. Freezes organic matter to make it brittle, followed by intense high-temperature incineration for massive shatter damage.
Frequently Asked Questions
Everything you need to know about Steam release timing, co-op mechanics, console ports, and secrets in End of Abyss.
Q: Will End of Abyss be released on Steam?
Yes, End of Abyss is expected to arrive on Steam in late 2027 following its timed exclusivity period on the Epic Games Store. Because Epic Games funded and published the PC release, it is exclusive to Epic on PC at launch, typically lasting 6 to 12 months before launching on Steam.
Q: Is End of Abyss co-op or multiplayer?
No, End of Abyss is currently a dedicated single-player survival horror experience. Developer Section 9 Interactive crafted the atmosphere specifically around tension, solitude, and exploration. However, the developers stated in an interview that a separate co-op survival challenge mode is being explored for post-launch updates.
Q: Can you play End of Abyss on Steam Deck right now?
Yes! Even though the game is on the Epic Games Store, you can easily install and play End of Abyss on Steam Deck by installing the Heroic Games Launcher in Desktop Mode, logging into your Epic Games account, and running the game through Proton GE with solid 45-60 FPS performance.
Q: What platforms is End of Abyss available on?
End of Abyss launched on October 1, 2026, for PC (Epic Games Store), PlayStation 5, and Xbox Series X/S. A specialized port for Nintendo's upcoming Switch successor (Switch 2) is currently reported to be in development.
Q: Who developed End of Abyss?
End of Abyss was created by Section 9 Interactive, an independent studio founded in Malmö, Sweden, by former senior developers and artists from Tarsier Studios (renowned creators of Little Nightmares and Little Nightmares II).
Q: How many endings does End of Abyss have?
End of Abyss features two distinct endings: The "Surface Extraction" standard ending, and the secret "Architect Symbiosis" true ending unlocked by discovering all 8 classified Section 9 Research Data Cores hidden throughout the subterranean sectors.
Q: Is there a free demo available for End of Abyss?
A playable prologue demo covering Level 0 (Surface Entry) and the first weapon acquisition was featured during previous gaming events and remains occasionally downloadable via promotional showcases on the Epic Games Store.