Secret Laboratory - Shin Megami Tensei: Persona 4 Golden Guide - IGN (2024)

Secret Laboratory is the sixth dungeon in the TV World of Persona 4 Golden. It first becomes available around September 16th, and must be completed by October 5th.

Shadows

Below is a list of enemies you may encounter within the Secret Lab, arranged by the floor you will encounter them upon from the lowest floor to highest.

Dominating Machine

The first boss battle will take a little navigating to find. You should come across a locked door on B4F. Since you don't have a key, continue on to B5F.

When you reach B6F, you should find another locked door that needs an ID. Search the chests on this floor until you find a Research Card. Take it to B4F and unlock the previously locked door to find Dominating Machine.

Skills

• Last Resort: Uses all HP to cast Heavy Almighty Damage
• Power Charge: Doubles the damage of the next Physical attack
• Herculean Strike: Medium Physical damage on the entire party

Dominating Machine Strategy

Dominating Machine is a rather simple boss fight. It will use a basic Power Charge – Herculean Strike combo to power up and attack the entire party. Your party should be at a pretty high level by now, so the strike shouldn't cause too much damage. If a teammate is still at a low level, have them guard before the strike is used.

If you don't finish it off quick enough, it may use Last Resort when it's HP is low. This will use up all of Domination Machine's HP to cast a Heavy Almighty Damage spell. Finish it off before it can do so.

After the battle, open up the chest in the back to get the Leader Card. Use it to open the locked door on B6F.

Shadow Naoto

The final boss fight is located on B9F.

Skills

• Brave Blade: Deals Severe Physical damage to one party member
• Attack: Basic Physical damage to one party member
• Agidyne: Inflicts Heavy Fire damage to one party member
• Maragidyne: Inflicts Heavy Fire damage to entire party
• Bufudyne: Inflict Heavy Ice damage to one party member
• Mabufudyne: Inflicts Heavy Ice damage to entire party
• Ziodyne: Inflicts Heavy Electric damage to one party member
• Maziodyne: Inflicts Heavy Electric damage to entire party
• Garudyne: Inflicts Heavy Wind damage to one party member
• Magarudyne: Inflicts Heavy Wind damage to entire party
• Megidolaon: Inflicts Severe Almighty damage to entire party
• Mute Ray: Deals a small amount of HP and SP damage and inflicts Silence on one party member.
• Element Zero: Elemental Resistances will be nullified on the entire party
• Galgalim Eyes: Inflicts Enervation on one party member, and reduces their HP to 1
• Heat Riser: Increases Attack, Defense, and Hit/Evasion rates for Shadow Naoto
• Debilitate: Decreases Attack, Defense, and Hit/Evasion rates of one party member
• Dekaja: Removes all positive effects of the entire party
• Dekunda: Removes all negative effects of Shadow Naoto

Shadow Naoto Strategy

This battle is pretty straight forward. Shadow Naoto is a fast Boss with a number of great skills. It can cause both physical and magical damage, increase its stats, and inflict Enervation and Silence.

If Yukiko is in the team, use Fire Break to remove the resistance of fire. Shadow Naoto mostly casts the same type of elemental damage to exploit weaknesses, so you can avoid this by letting the character guard if its weakness has been exploited. It also uses Mute Ray, which can be reflected by Makarakarn or a Magic Mirror. If a weakness has been exploited, Shadow Naoto uses Heat Riser to increase its stats or Debilitate to reduce your stats. As it uses Element Zero, it nullifies all resistances, so bringing a persona with resistances aside from physical attacks is not very helpful. It also uses Galgalim Eyes after it used Element Zero and if it can't exploit a weakness, and rarely uses Megidolaon, so the battle is not too difficult if you're well prepared.

Extreme Vessel

After the dungeon has been cleared, return to B9F to find Extreme Vessel.

Skills

• God's Hand: Inflicts Severe Physical Damage to one party member
• Virus Wave: Inflicts Heavy Physical damage to entire party with a chance of Poison
• Mind Charge: The next magic attack will be 2.5 times greater in power.
• Power Charge: The next physical attack will be 2.5 times greater in power.
• Rebellion: Increases the Critical Hit rate of the user
• Agidyne: Inflicts Heavy Fire damage to one party member
• Maragidyne: Inflicts Heavy Fire damage to entire party
• Bufudyne: Inflict Heavy Ice damage to one party member
• Mabufudyne: Inflicts Heavy Ice damage to entire party
• Ziodyne: Inflicts Heavy Electric damage to one party member
• Maziodyne: Inflicts Heavy Electric damage to entire party
• Garudyne: Inflicts Heavy Wind damage to one party member
• Magarudyne: Inflicts Heavy Wind damage to entire party

Extreme Vessel Strategy

Extreme Vessel is a pretty hard boss battle. Its God's Hand is unboosted already a huge threat, but it knocks anyone out if it is boosted. Bringing in a persona which nulls physical attacks or better is crucial, otherwise use Tetrakarn. It will try to increase its critical hit rate and double the power of its next magical attack before hitting the entire team with a elemental spell to exploit your weakness. Guard the attack as the element will be random. It will also attempt to poison the entire party with Virus Wave.

Use Wind damage to knock it down, but don't do an All-Out Attack. Continue hitting it with Wind and Physical damage while it's down to do bonus damage.

When the fight ends, check the table for Algernon, a new weapon for Naoto.

• Algernon
  • Effect: +5 to all stats
  • Attack: 230
  • Hit: 85