All Optical Disk Locations Grounded 2 Into The Abyss
Optical Disks are rare, fixed-location collectibles added in the Into The Abyss update. Each disk unlocks lore entries, crafting schematics, or upgrades that are valuable for late-game progression. They’re placed in distinct biomes and often guarded by environmental hazards or tough enemies. Collecting all 16 gives completionists bragging rights and tangible in-game rewards that make exploration and combat easier later on.
How to prepare before hunting disks
Gear and loadout
Armor: Bring mid-to-high tier armor for protection; some disks are in high-damage zones.
Weapons: A reliable ranged weapon plus a fast melee weapon covers most encounters.
Tools: Grapple or mobility tools help reach elevated disks.
Consumables: Healing items, stamina boosters, and resist potions for environmental hazards.
Storage: Carry a stack of repair materials and a portable stash if available.
Team vs Solo
Solo: Move slower, scout carefully, and use stealth where possible.
Co-op: Split roles—one scout, one combat, one support—to clear areas faster and revive teammates.
Timing and checkpoints
Visit disks after unlocking fast travel points near the target biome.
Save before risky climbs or boss zones. If you die, reload to the last safe point to avoid losing progress.
How this guide is organized
Each disk entry includes: biome, landmarks, exact approach, hazards, recommended loadout, and quick tips. I group disks by region so you can chain multiple pickups into a single efficient run. Use the map route suggestions to minimize backtracking.
Region A: Surface Edge Cluster
Disk 1 — Cliffside Antenna Biome: Rocky surface near the eastern cliffline. Landmarks: Tall antenna tower; broken cable bridge. Approach: From the nearest fast travel, head east along the cliff until you see the antenna silhouette. The disk sits on a small platform halfway up the tower. Use a grapple or timed jumps to reach the platform. Hazards: Wind gusts that push you off edges; small patrol enemies. Recommended loadout: Light armor for mobility; ranged weapon to clear patrols. Tip: Wait for wind cycles before jumping; use the antenna as cover from ranged enemies.
Disk 2 — Sunken Radio Cache Biome: Shallow marsh near the cliff base. Landmarks: Half-buried radio console; reeds and shallow water. Approach: Drop down carefully from the cliff edge using a rope or slow-fall tool. The disk is inside the radio console behind a rusted panel. Hazards: Poisonous spores; ambush insects. Recommended loadout: Medium armor; anti-poison consumables. Tip: Clear the insects from a distance before approaching the console.
Region B: Overgrown Ruins
Disk 3 — Library Archive Biome: Overgrown building interior with collapsed floors. Landmarks: Stacks of books, a collapsed skylight. Approach: Enter through the broken wall on the south side. The disk is on a high shelf reachable by stacking crates or using a grapple. Hazards: Falling debris; hidden traps. Recommended loadout: Balanced armor; stamina potions. Tip: Move crates to create a safe ascent and block falling debris.
Disk 4 — Observatory Dome Biome: Elevated dome with a rotating telescope. Landmarks: Dome roof, rotating mechanism. Approach: Time the dome rotation to slip inside the telescope housing. The disk is mounted on the inner rim. Hazards: Mechanical pinch points; turret drones. Recommended loadout: High-damage ranged weapon; EMP or drone-disabling tools. Tip: Disable turrets first, then use the dome rotation to your advantage to reach the disk.
Region C: Subterranean Caverns
Disk 5 — Glowroot Chamber Biome: Bioluminescent cavern with vertical shafts. Landmarks: Large glowroot tree; hanging vines. Approach: Descend the main shaft using vines and ledges. The disk is lodged in a hollow at the base of the glowroot. Hazards: Low visibility; acid pools. Recommended loadout: Acid-resistant gear; light source. Tip: Mark your path with temporary beacons to avoid getting lost.
Disk 6 — Echoing Vault Biome: Stone vault with echoing corridors. Landmarks: Stone pillars; echo chambers. Approach: Solve a small pressure-plate puzzle to open the vault door. The disk sits on a pedestal inside. Hazards: Puzzle resets if you trigger wrong plates; guardian constructs. Recommended loadout: Crowd-control weapon; puzzle patience. Tip: Observe plate patterns from the doorway before stepping in.
Region D: Abyssal Trenches
Disk 7 — Deepwater Relay Biome: Flooded trench with submerged platforms. Landmarks: Relay tower half-submerged; floating debris. Approach: Swim through the trench and surface at the relay tower. The disk is inside a sealed compartment accessible by breaking a corroded hatch. Hazards: Drowning risk; aquatic predators. Recommended loadout: Underwater breathing gear; harpoon or ranged aquatic weapon. Tip: Clear predators from a distance and use short swim bursts to conserve breath.
Disk 8 — Pressure Dome Biome: High-pressure dome with reinforced walls. Landmarks: Pressure gauges; reinforced bulkheads. Approach: Equalize pressure by activating three nearby valves in sequence. The disk is behind the central bulkhead. Hazards: Pressure surges; explosive decompression. Recommended loadout: Pressure-resistant suit; quick-repair kit. Tip: Activate valves in the order indicated by nearby markings to avoid surges.
Region E: Fungal Forest
Disk 9 — Spore Canopy Biome: Dense fungal canopy with suspended walkways. Landmarks: Giant mushroom caps; rope bridges. Approach: Cross the canopy via rope bridges and climb a central mushroom stalk. The disk is under a cap near the top. Hazards: Spore clouds that reduce visibility; falling platforms. Recommended loadout: Respirator; sticky boots for grip. Tip: Move during low-spore intervals and use the mushroom caps as temporary cover.
Disk 10 — Mycelium Node Biome: Ground-level mycelium network. Landmarks: Pulsing mycelium nodes; glowing veins. Approach: Follow the glowing veins to a central node. The disk is embedded in the node’s core. Hazards: Mycelium bursts that spawn enemies. Recommended loadout: Area-of-effect weapon; quick escape tool. Tip: Lure spawned enemies away before interacting with the node.
Region F: Industrial Wastes
Disk 11 — Conveyor Control Room Biome: Abandoned factory with moving conveyors. Landmarks: Conveyor belts; control panels. Approach: Ride a conveyor to the control room entrance. The disk is on a control console behind a glass panel. Break the glass carefully to avoid alarms. Hazards: Crushing machinery; alarm-triggered drones. Recommended loadout: Heavy armor; stealth tools to avoid alarms. Tip: Time the conveyor gaps and disable alarms before breaking the glass.
Disk 12 — Reactor Annex Biome: Reactor core area with heat vents. Landmarks: Reactor core; cooling pipes. Approach: Navigate the cooling pipe maze to reach the annex. The disk is in a sealed locker near the core. Hazards: Heat damage; radiation pulses. Recommended loadout: Heat-resistant suit; radiation shielding. Tip: Use cooling stations to recover between bursts.
Region G: Sky Platforms
Disk 13 — Windmill Spire Biome: Floating platforms tethered to a windmill spire. Landmarks: Windmill blades; tether cables. Approach: Use tether lines to hop between platforms. The disk sits on a small platform behind the windmill housing. Hazards: Falling; blade sweep damage. Recommended loadout: Mobility gear; grappling hook. Tip: Time jumps between blade rotations and use tethers to steady yourself.
Disk 14 — Beacon Tower Biome: Tall beacon tower with signal arrays. Landmarks: Beacon light; signal dishes. Approach: Climb the tower via internal ladders. The disk is in a locked cabinet at the top. Pick the lock or find the key in a nearby maintenance room. Hazards: High fall risk; signal jammers. Recommended loadout: Climbing gear; lockpicks. Tip: Search the maintenance room first to avoid a risky climb.
Region H: Abyssal Core
Disk 15 — Core Access Hatch Biome: Central abyssal core with heavy security. Landmarks: Core reactor; security turrets. Approach: Disable security nodes around the perimeter to unlock the hatch. The disk is inside the core access chamber. Hazards: High-level enemies; turret swarms. Recommended loadout: High-tier armor; EMP grenades. Tip: Use stealth to disable nodes one by one, then sprint to the hatch.
Disk 16 — Final Archive Biome: Hidden archive beneath the core. Landmarks: Sealed archive doors; data racks. Approach: Solve a multi-step key sequence gathered from previous disks to open the archive. The final disk is on a central pedestal. Hazards: Puzzle-locked defenses; elite guardians. Recommended loadout: Full raid-ready gear; team coordination. Tip: Bring a full party for the final archive; coordinate roles to handle guardians and puzzle mechanics.
Route planning and chaining disks efficiently
Suggested multi-disk runs
Surface Edge Cluster run: Disk 1 → Disk 2 → Fast travel back. Good for early-game players.
Overgrown Ruins loop: Disk 3 → Disk 4 → Nearby stash. Clear turrets first.
Cavern sweep: Disk 5 → Disk 6 → Surface exit. Bring light sources.
Abyssal Core push: Disk 7 → Disk 8 → Disk 15 → Disk 16. Best done with a team.
Why chaining matters Chaining reduces repeated travel time, conserves resources, and lets you clear hazards in a predictable order. Plan runs around fast travel points and safe houses.
Combat and traversal tactics for disk hunting
Stealth vs Aggression
Use stealth when disks are in tight spaces with patrols; avoid unnecessary fights.
Use aggression when enemies are clustered and you have area-of-effect tools.
Mobility tricks
Grapple to bypass dangerous ground routes.
Use temporary platforms or environmental objects to create new paths.
Time moving hazards (wind, blades, conveyors) and use them to your advantage.
Resource management
Refill consumables at safe houses between runs.
Repair gear after heavy fights; a broken grapple can ruin a climb.
Comparison table: Solo vs Co-op disk runs
| Attribute | Solo | Co-op |
|---|---|---|
| Speed | Medium | High |
| Safety | Medium | High |
| Resource use | Low to Medium | Higher but shared |
| Puzzle handling | Slower | Faster with roles |
| Best for | Stealthy pickups | Raid-style archive runs |
Stats table: Typical time per disk by difficulty
| Difficulty | Average time per disk |
|---|---|
| Easy zones | 3–6 minutes |
| Mid zones | 6–12 minutes |
| High-risk zones | 12–25 minutes |
Quality-of-life tips and tricks
Mark disks on your map as you find them to avoid revisits.
Use a checklist: mark which disks require keys or puzzle steps.
Save often before risky climbs or puzzle sequences.
Rotate roles in co-op: one scout, one combat, one support.
Collect environmental clues—some disks require items or codes found nearby.
Troubleshooting common problems
Disk not appearing
Reload the area or fast travel away and back.
Ensure any prerequisite puzzle or valve sequence is completed.
Enemies respawning too fast
Clear nearby spawn points or use stealth to bypass them.
Use area denial tools to slow respawns while you grab the disk.
Can’t reach disk due to missing tool
Return later with a grapple, jetpack, or other mobility upgrade.
Look for alternate routes—sometimes a longer path is safer.
Final Archive strategy (Disk 16) — detailed plan
Phase 1: Prep
Bring a full party with defined roles.
Stock high-tier healing, EMPs, and puzzle tools.
Phase 2: Node disabling
Split into two teams: one handles guardians, the other disables nodes.
Use EMPs to neutralize turrets while the other team moves to puzzle stations.
Phase 3: Puzzle sequence
Collect codes from previous disks or terminals.
Input codes in the correct order; mistakes spawn guardians.
Phase 4: Boss and extraction
After the archive opens, expect elite guardians.
Use crowd control and burst damage to clear them, then extract quickly.
FAQ
How many Optical Disks are there in Into The Abyss There are 16 Optical Disks total scattered across multiple biomes.
Do I need to collect them in a specific order No, but some disks unlock keys or codes needed for the final archive. Collecting regionally and following the route suggestions reduces backtracking.
Can I get all disks solo Yes, but the final archive and some high-risk zones are much easier with a coordinated team.
What rewards do disks give Disks unlock lore, schematics, and sometimes keys or codes that help with late-game content.
Will disks respawn if I miss one Disks are fixed-location collectibles. If you fail to pick one up due to death, reload to your last save and return; they do not permanently disappear.
Any quick tips for the hardest disks Bring mobility tools, EMPs, and a full party. Clear turrets and disable environmental hazards before attempting the final climb or puzzle.
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