The "Investigate the hatch" objective in Blind Descent directs survivors toward a submerged structure uncovered beneath the subterranean Martian landscape. In the demo and playtest builds developed by Pokuch, this story event occurs after you breach the deep research facility, defeat the Corrupted Silkworm Queen, acquire your initial symbiosis mutation, and lift the facility lockdown. Returning to the surface reveals that the central lake has completely drained, exposing an alien hatch built into the lakebed that leads further into the Martian interior.
Navigating this threshold requires adequate gear, health preservation, and awareness of the living alien ecosystem that populates the depths.
How to Trigger and Locate the Hatch
Reaching the hatch objective requires completing the initial progression chain set within the Hyperion Excavation site. After the elevator crashes 10 miles beneath the surface, your AI companion, Hollow Watch, guides you through basic survival and early reconnaissance.
- Locate Hakan near the central pillar: Follow the distress beacon to find your wounded crewmate Hakan. After he passes away, retrieve his equipment and approach the nearby column cave.
- Clear the Column facility: Undergo the AI preparedness scan, ensuring you bring a melee weapon, shield, lantern, bandages, and ranged tools.
- Defeat the Corrupted Queen: Power the central containment unit with alien batteries, defeat the Corrupted Silkworm Queen, and interact with the purple plant inside the chamber to unlock your first symbiosis mutation.
- Override the lockdown: Access the master console at the top of the chamber to deactivate the facility lockdown.
- Return to the upper layer: Take the exit elevator back up to the underground jungle. Lifting the lockdown causes the nearby lake to drain, leaving an exposed alien hatch and descending root structure visible in the dried lakebed.
Pre-Mission Preparation Checklist
Venturing down into newly uncovered structures exposes you to higher tiers of hazards, from toxic gas clouds to aggressive mutant variants. The table below outlines the target preparation state verified from official playtest mechanics.
| Preparation Area | Target State Before Approaching the Hatch | In-Game Purpose | Priority |
|---|---|---|---|
| Health and Recovery | Full vitals, stack of banana leaf healing bandages | Counters continuous damage from insect swarms and acid spitters | Essential |
| Hydration | Water cone or waterskin filled with boiled water | Dehydration depletes stamina and health quickly | Essential |
| Armor | Crafted wooden chestplate and legplates | Mitigates heavy physical hits from slicer beetles and bosses | High |
| Melee and Shield | Crafted sword and shield or spear | Blocking prevents lethal hits; spear provides extended attack reach | Essential |
| Ranged Weapon | Bow with arrows (or throw rocks in emergencies) | Safely dispatches spitters and flying pests from outside melee range | High |
| Lighting | Waist-mounted lantern or glowing biological items | Illuminates dark subterranean tunnels without consuming a weapon hand | High |
| Inventory Space | At least 3 to 5 open inventory slots | Accommodates alien batteries, logs, and crafting components | High |
Step-by-Step Walkthrough: Investigating the Hatch
Once the lake has drained and revealed the entrance, proceed toward the hatch using structured exploration steps.
- Trace a Clear Path: Mark your path from your active campsite to the edge of the drained lakebed. Clear out any nearby mosquito clusters or roaming fauna beforehand so you do not carry threats toward the threshold.
- Scout the Perimeter: Approach the rim of the basin and observe the surrounding terrain. Watch for corrosive vents, active biological growths, or pulsating infection roots clinging to the metal entrance.
- Access the Descent Vines: Your new symbiotic mutation allows you to interact directly with the alien flora. Approach the tendrils near the hatch opening. Grab the vine descending through the vertical shaft to lower yourself into the lower facility.
- Scan the Structure: Deploy your scanner with the interaction key (default F on keyboard) to register the hatch door, surrounding cables, and any console interfaces. Scanning feeds vital threat data into Hollow Watch's database and unlocks associated recipes.
- Identify Secondary Locks: If the hatch does not open or respond immediately, it likely points toward a missing tool, key item, or deeper story trigger — check crafting options and nearby logs before forcing the issue.
Solo vs. Co-op Strategy
Blind Descent supports solo play as well as co-op for up to four players. Your tactical approach to the hatch objective changes based on party size.
Solo Strategy
When exploring alone, you have no teammates to revive you if an ambush occurs near the hatch. Move slowly, listen closely for audio cues like the evening horn or mosquito humming, and never initiate an encounter at low stamina. Keep a clear escape path mapped toward your base camp bed in case you must retreat and sleep through the nighttime cycle.
Co-op Strategy (2 to 4 Players)
In multiplayer sessions, divide tasks before entering the drained lakebed:
- One player focuses on carrying power items (such as batteries) and interacting with the hatch console.
- Dedicated vanguard players equip shields and spears to guard the perimeter against aggressive wildlife like beetles and spitters.
- Establish a fixed rally point away from the hatch opening. If a teammate is incapacitated by acid or heavy attacks, draw the hostile creatures away from the body before initiating a recovery attempt.
Frequently Asked Questions
What is the "investigate the hatch" objective in Blind Descent?
It is a primary story exploration objective that occurs after you override the underground facility lockdown. The drained lake exposes an alien hatch leading to the deeper habitats of the Martian interior.
What should I do if the hatch will not open?
If the hatch remains locked when you arrive, do not force the interaction. Trace the illuminated conduits running from the frame to see if an alien battery socket, console override, or vine obstruction requires your attention first.
Can you complete the hatch investigation solo?
Yes. The objective can be reached and completed playing solo or in cooperative teams of up to four players. Solo players must exercise caution with equipment durability, as weapons break with continued use and require a dedicated workbench to rebuild.
When will the full version of Blind Descent be available?
According to official announcements by developer Pokuch and publisher META Publishing on Steam, Blind Descent is scheduled to launch into Steam Early Access on December 2, 2026. Pre-release playtests and demo builds have been made available periodically leading up to launch.
