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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteThere are 10 Suit Mods reported in End of Abyss: eight are inside vaults, while Vitality Enhancer Mk. I starts equipped and Radiation Protection is found outside a vault in Factory East B2. The eight vault mods are Equipment Belt, Blast Resistance, Vitality Enhancer Mk. II, Acid Neutralizer, Heal Amplifier, Proximity Sensor, Auto-Defibrillator, and Experimental Core.
All eight vaults and their Suit Mods
The locations and requirements below are reported by the End of Abyss Wiki vault guide, updated October 3, 2026. Use the sector, floor, and landmark to navigate: the guide notes that the game does not number vaults on screen.
| Sector and floor | Vault landmark | Suit Mod | Reported access requirement |
|---|---|---|---|
| Habitation Sector, F1 | End of the hall | Equipment Belt | Vault Key |
| Factory West, F2 | Left side | Blast Resistance | Vault Key and Explosive Charge to break a wall |
| Communication Center, F2 | Below the trapdoor | Vitality Enhancer Mk. II | Vault Key and completion of the 3-SCU objective |
| Waterworks, B3 | Drained pit | Acid Neutralizer | Vault Key, Grappling Hook, pump, and an Energy Node door |
| Reactor, B4 | Top-left corner | Heal Amplifier | Vault Key and story progress into the Reactor’s lower floors |
| Containment Sector, F1 | Bottom-right | Proximity Sensor | Vault Key and Incinerator to burn Parasitic Growth and reveal a ladder |
| Infirmary, B1 | Left side | Auto-Defibrillator | Vault Key, Infirmary Key, and Restricted Access Keycard |
| Lower Levels, F1 | Right-side door | Experimental Core | Vault Key and Level 3 Access card; the route involves getting Level 2 access first |
How Vault Keys and access gates work
The guides report eight Vault Keys in total: five from story-related bosses and three from optional bosses. Every vault requires a Vault Key, but the available guides do not pair a particular key with a particular door, so there is no reliable key-by-key door list to follow.
A Vault Key is only one part of access at several locations. The Factory West vault needs an Explosive Charge; Waterworks combines traversal and route-opening requirements; Communication Center has an objective gate; and Infirmary and Lower Levels require access credentials. The Containment Sector vault is especially easy to mistake for an earlier pickup: the guide says its ladder is hidden behind Parasitic Growth that must be burned with the Incinerator, obtained in the final story area. Lower Levels likewise depends on Level 3 Access, with Level 2 access on the way to that chain.
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For cleanup, think in terms of blockers rather than assuming that seeing a sector means its vault is ready. If a vault door or route remains inaccessible, continue the relevant story objective or acquire the named tool or card, then return.
The two Suit Mods outside vaults
Vitality Enhancer Mk. I
The all-mod guide says Vitality Enhancer Mk. I is already equipped when the player starts. It is one of the 10 reported Suit Mods, but it is not a vault reward.
Rank #2
- FACE THE LEVIATHANS: Adds a new Border Board and Leviathan cards to replace the threat track, introducing sea monster battles that add tension and excitement to every game.
- NEW LORDS AND ALLIES: Recruit powerful Lords and Allies with abilities designed to help you fight Leviathans and secure victory.
- GAIN EXTRA REWARDS: Defeat the most Leviathans to earn the statue token and gain 5 extra victory points at the end of the game.
- HIGH STAKES AND STRATEGY: Explore the depths carefully—fighting Leviathans is risky but rewarding, while fleeing may result in injury.
- EXPAND YOUR ABYSS EXPERIENCE: Requires the Abyss board game to play. Designed for 2-4 players, ages 14+, this expansion deepens strategy and gameplay.
Radiation Protection
Radiation Protection is in Factory East B2, not inside a vault; the vault guide says reaching it requires the Basement Keycard. It helps with radiation zones. GamesRadar’s 2026 review reports that activating it costs four energy points, so factor that cost into when you use it.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Can you return for vaults after the story?
Both location guides report that vaults and Suit Mods are not missable and that vaults remain available after the main story. Opening all eight vaults is associated with the Dungeon Crawler trophy, making a post-story sweep a reported option if you prefer to collect late-gated tools and cards first.
The locations and requirements here come from secondary guides rather than an official developer or publisher location guide. Treat them as reported route information, particularly where a guide does not specify an exact key-door pairing.
Quick Recap
Best Value
- Intensive tactical confrontation: Take control of your legions and dominate the most important places of the kingdom.
- Strategic game for 2 players: each choice affects morality, initiative and zone control.
- ABYSS WORLD - Discover the unique atmosphere and beautiful illustrations of the Abyss-Saga.
- Created by renowned authors - Bruno Cathala, Charles Chevallier and Johannes Goupy unite their talent into a captivating duel.
- Ideal gift for strategy lovers: a compact, rich and immersive game, perfect for parties as a couple.
Rank #4
- For 1-6 Players. 60-90 minute playing time
- The Assault Units, the Krohns, will advance towards Zone 1, and once there, they'll attack the Heroes on the wall and try to break into the Citadel
- Gargohs, the Support Units, will advance towards Zone 2 and, once there, they'll hit all Heroes in the Quarter they face
- Molens, the Heavy Units, will attack directly from Zone 3 and damage all Heroes and buildings in the Quarter they face
- Each monster figure on the board will activate and perform their actions according to its rank. The Heroes must coordinate their actions well to share resources
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