How to Survive the Monster in the Vessel MOLE: A Complete Guide

The monster in the vessel MOLE, officially designated the "Stowaway," is a sound-sensitive predator you cannot kill. Survival is not about fighting back; it’s about systematic stealth, auditory misdirection, and a deep understanding of its three behavioral phases: Lurk, Hunt, and Sabotage. Your goal is to outlast the breach cycle until the creature either retreats or is ejected via the Emergency Hull Decontamination sequence. Every move you make, from crafting at a bench to walking on a metal deck, generates sound that it can and will investigate.

This guide breaks down the creature's exact mechanics, the gear you need to craft, and the moment-to-moment tactics required to make it through every encounter. Forget brute force; mastery of the MOLE's interior and the Stowaway's senses is the only path to your next drilling run.

01

What Exactly Is the Stowaway?tag

The Stowaway is a parasitic organism that attaches to the MOLE's hull during deep-earth drilling operations, typically in biolithic-rich strata below 2,000 meters. It remains dormant on the exterior until the vessel returns to the relative quiet of the subterranean base, at which point it breaches the hull through a weakened plate or airlock seal. It is a silicon-based lifeform with a crystalline exoskeleton that shifts and scrapes, creating its signature clicking sounds.

Its primary sensory organ is a tympanic membrane stretched across its head, allowing it to detect minute vibrations and sound waves with terrifying precision. The Stowaway is completely blind, navigating exclusively through echolocation and passive acoustics. This is its greatest strength and your primary vector for exploitation. It has no discernible biology that is vulnerable to your standard-issue mining tools; hitting it with your cutter or drill will only create more noise and trigger an instant, lethal attack.

Key characteristics to remember:

• Sound Sensitivity: Footsteps, crafting, opening lockers, and even bumping into objects can attract it.
• Invulnerability: It cannot be damaged or killed by any player equipment.
• Cyclical Behavior: Its presence in the vessel is temporary, following a predictable three-phase pattern.
• Audio Mimicry: In later stages, it can crudely mimic vessel sounds (like a medkit fabricator completing its cycle) to lure you from hiding.

02

The Three Phases of a Breach Eventtag

Every Stowaway incursion follows a strict, timed sequence. The ambient lighting in the MOLE will shift to a dim, orange emergency state for the duration of the breach. Learning the cues for each phase is critical for knowing when to hide, when to move, and when to risk crafting a necessary item.

Phase 1: Lurk (Approx. 5 Minutes)tag

Immediately following a breach, the Stowaway enters its Lurk phase. It will patrol the vessel's lower decks—primarily the Cargo Bay and Engine Room—moving slowly and erratically. Its clicking sounds will be intermittent and relatively quiet.

• Behavior: Unfocused patrol route. It is mapping the vessel's interior and establishing a baseline of ambient noise.
• Threat Level: Low. It will only attack if you make a loud noise directly within its immediate vicinity (e.g., sprinting or using a tool right next to it).
• Your Objective: Use this time to move silently to a secure hiding spot or to the upper decks (like the Cockpit or Med Bay), which it rarely patrols during this phase. This is the safest window to craft one essential item, like a Sonic Decoy.

Phase 2: Hunt (Approx. 10 Minutes)tag

This is the most dangerous phase. The Stowaway's clicking becomes rapid and aggressive, and it expands its patrol route to include all decks of the MOLE. It will actively investigate any sound source, no matter how small.

• Behavior: Aggressive, search-and-destroy pattern. It will pause frequently to listen, sweeping its head back and forth.
• Threat Level: Extreme. Any non-crouched movement will likely be detected. It will open non-sealed lockers and check under tables.
• Your Objective: Remain hidden and silent. If you must move, do so only while crouched and on soft surfaces if possible. Use distractions like throwing a loose object or deploying a Sonic Decoy to pull it away from your position or an objective. Never run during the Hunt phase.

Phase 3: Sabotage (Approx. 3 Minutes)tag

After a prolonged hunt, the creature shifts focus. It will move towards a critical vessel system—usually the Oxygen Re-circulator, the Electrical Junction in the Engine Room, or the Hydroponics Bay pump. Its clicking subsides, replaced by loud scraping and tearing sounds as it damages the component.

• Behavior: Stationary and focused on destroying a system. It creates a tremendous amount of noise, masking your own sounds.
• Threat Level: Medium. It is distracted, but will instantly attack if you approach it directly.
• Your Objective: This is your chance. The noise it makes will cover your footsteps, allowing you to either move to a better hiding spot for the next cycle or, if you're prepared, to approach the main terminal and initiate the Emergency Hull Decontamination. Alternatively, you can flank it to repair a different system it previously damaged.

Once the Sabotage phase ends, the cycle repeats, starting again with the Lurk phase. The entire breach event typically lasts for 2-3 full cycles before the creature retreats back through the hull.

03

Your Survival Toolkit: Essential Gear and Upgradestag

You can't fight the monster, but you can upgrade your gear and the vessel itself to make detection less likely. Prioritize these crafts and upgrades at the vessel's main fabricator between drilling runs.

The Sound Meter is arguably the most important upgrade to get first. It provides direct, unambiguous feedback on your actions, training you to understand what the monster can and cannot hear. Without it, you are flying blind.

04

Step-by-Step: Surviving a Full Hunt Cycletag

Let's walk through a typical encounter. You've just returned from a lucrative run, the alarms blare, and the lights shift to orange. A breach is happening.

1. Identify the Breach Point: The initial breach sound is directional. Try to pinpoint if it came from the Cargo Bay (most common) or Engine Room. The Stowaway will emerge from this area.

2. Move During Lurk Phase: The five-minute Lurk phase begins. Immediately stop what you're doing. Crouch and move deliberately away from the breach point. Your destination should be a pre-determined hiding spot. The crawlspace in the maintenance shaft behind the Engine Room is an excellent option, as is the storage locker inside the Med Bay.

3. Establish Silence: Once in your hiding spot, do not move. Turn off your headlamp. Do not access your inventory or the map, as these actions create a small electronic chime. You will hear the creature's slow, intermittent clicks as it patrols.

4. Misdirect During Hunt Phase: The clicks intensify. The Hunt phase has begun. If the Stowaway gets too close to your location (the clicks become loud and clear), you need to create a distraction. Equip a Sonic Decoy or a loose object (like a spent fuel cell). Lean out of your hiding spot, aim for a far corner of an adjacent room, and throw it. The sound will draw the creature away, giving you precious breathing room.

1. Act During Sabotage Phase: After about ten minutes, you'll hear loud, industrial tearing sounds. This is the Sabotage phase. The creature is stationary and distracted. Now is the time to act. If you need to get to the Cockpit to initiate the Decontamination sequence, this is your window. The monster's own noise will mask your crouched movement across the vessel. Plan your route to give its location a wide berth.

2. Rinse and Repeat: If you don't end the encounter via decontamination, the creature will finish its sabotage and the cycle resets to the Lurk phase. Use this lull to reposition to a new hiding spot, as the Stowaway is less likely to patrol the same area twice in a row at the start of a new cycle. Survive two or three of these cycles, and it will retreat on its own.

05

Frequently Asked Questionstag

Can you kill the monster in the vessel MOLE? No, the Stowaway is completely invulnerable to all player weapons and tools. The gameplay is centered on survival and evasion, not combat. Attempting to attack it will result in an instant death.

How do you stop a breach from happening? You can't stop them completely, as they are a core mechanic tied to deep-earth drilling. However, you can invest in the "Hull Integrity Scan" upgrade at the vessel fabricator to significantly reduce the probability of a breach occurring after each run.

What's the best hiding spot in the MOLE? The two strongest options are the maintenance crawlspace accessed via a panel in the Engine Room and the sealed medical supply locker in the Med Bay (requires the "Locker Seals" upgrade). Both spots break line of sight and muffle sound effectively.

How do you trigger the Emergency Hull Decontamination? During a breach event, you must access the main command console in the Cockpit. The sequence requires a 30-second activation period where you cannot move. It will generate significant noise, drawing the Stowaway to the Cockpit. It is best attempted during the Sabotage phase when the creature is distracted elsewhere, or by using a Sonic Decoy to lure it to the far end of the vessel (like the Cargo Bay).

The Final Wordtag

The Stowaway transforms MOLE from a methodical resource-gathering game into a full-blown survival horror experience. It is a punishing, terrifying encounter that forces you to re-learn your own vessel, treating it not as a safe haven but as a hunting ground where you are the prey. Respect the soundscape, invest in stealth, and remember that patience is your greatest weapon. Every click it makes is information. Use it, and you will survive.