ChaptersMeryl & Psycho Mantis
Meryl & Psycho Mantis
- 1
1. Searching for Meryl in B1
Take the elevator up to Basement B1 to regroup with Meryl:
B1 Office Floor- Identify Meryl: Three sentries patrol the central corridor. Observe their walking gait: one sentry walks with a distinct sway, and their military fatigue jacket is visibly oversized.
- Silent Execution: Eliminate the other two genuine Genome Soldiers silently with your suppressed SOCOM.
Upon realizing she has been identified, Meryl panics and sprints into the women's restroom at the end of the hall. Follow her inside.
- 2
2. Restroom Rendezvous & The PAL Key
Inside the restroom, an extensive conversation unfolds as Meryl formally joins forces with Snake:
- Meryl provides the Level 5 Keycard and the shape-memory override system: the Metal Gear REX PAL Key.
- Before advancing, backtrack to the southern offices with your new card: collect Cardboard Box B, several packs of Diazepam, ammunition, and two extra rations.
- Advance with Meryl into the northern corridor connecting to the Communications Towers.
- 3
3. Mind Control & Duel with Psycho Mantis
Midway through the hallway, Meryl clutches her head in pain, turns around, and draws her weapon with glazed eyes:
Do NOT Shoot Meryl!Meryl is under the telepathic mind control of Psycho Mantis. Lob a Stun Grenade or knock her down with a punch combo to incapacitate her safely without causing lethal harm.
Step through the double doors into the commander's quarters, where Psycho Mantis materializes, levitating above the floor.
Psycho Mantis
Boss · Very Hard / Special PuzzleFOXHOUND Telepathic Commander.
Strategy- Weak against: Controller in Port 2, destroying gas-masked statues, and Thermal Goggles.
- The Controller Port 2 Trick: Physically unplug your controller and insert it into Controller Port 2 (or remap Player 2 in emulators/Master Collection). Mantis will scream in shock, unable to predict your moves.
- Alternative Method: If unable to switch controller ports, shoot and destroy the two gas-masked busts in the upper corners to fracture his psychokinetic focus.
- When Mantis turns invisible, equip Thermal Goggles to reveal his levitating heat signature and fire full-auto FA-MAS bursts.
- If he puppets Meryl into pointing her gun at her own temple, lob another Stun Grenade.
Upon defeat and hearing his final revelations, Mantis uses his dying telekinetic strength to slide the heavy northern bookcase aside, revealing the underground pathway to the Communications Towers.