This can be a little tricky. With all the four base personas (Lilim, Vetala, Incubus, Succubus), none of them can learn Mabufudyne innately. This means you need to create one of them via fusion and inherit Mabufudyne from another persona. With the four base personas, only Succubus can learn Mabufudyne.
Consider the following combinations for Succubus. One of the base personas for Succubus SHOULD HAVE Mabufudyne.
Empress + Chariot\ Death
Emperor + Justice
Hanged Man + Death
Lovers + Death
Magician + Chariot\ Hanged Man
Strength + Tower
Temperance + Devil
Defeating the Reaper (1)
I suggest to be at least level 70+ minimum before facing this Shadow. The higher, the better. This enemy is still a threat even if all your characters are at LV99. First tip, DO NOT USE MAGIC/ATTACK MIRRORs. This will trigger the Reaper to use Megidolaon EVERY TURN. Even with Mediarahan, that will pose a problem.
Next: Have a party member or two take care of the support/ healing. When I battled the Reaper, my preferred party was Yukari, Mitsuru and Aigis. Yukari is essential for healing/ reviving allies while Aigis party affecting support skills on Heal/Support mode helps a lot in keeping the party afloat. You can replace Mitsuru with any strong attacker you may have.
For the offensive, use MEGIDOLAON. This enemy has very strong damage resistance and good evasion rate. Megido skills are almost always accurate (96-99%) and has no attribute (sure to pierce through any resistance) so this is your attack skill of choice.
Death is dangerous for having high level attacks, damaging spells and instant death attacks. As long as you have a good supply of Homunculus, you will be safe from these kinds of attacks Dont hesitate to use your rare consumables such as Balms of Life, Soma, etc. You wont need them in your last battles since you could be strong as hell that you would laugh out at Nyx.
Defeating the Reaper (2)
The Reaper only has around 9999 HP. Simply cast the fusion spell Armageddon (Helel + Satan) to deal 9999 damage and end the battle in one turn.
Fast forward dialogues
Press and hold the Triangle button to skip through long dialogues.
Force enemy to turn away
To immediately get an enemy to turn its back on you, enter the menu, then exit out. The enemy will begin moving in a new direction. Repeat this until it has turned away.
Gifts for girlfriends
Antique Shop
Goggled-eye Doll
Kaleidoscope
Japanese Doll
Teddy Bear
(You need to trade the gems dropped by shadows)
School Shop
Book Cover
Rafflesia (Port Island Flower Shop)
Glass Vase
Mini Cactus
Red Pine Bonsai
Rose Bouquet
Shrine
Lucky Charm - get the luckiest fortune in the shrine, can be picked up by Koromaru when you take him for a walk.
Jack Frost Doll - Can be won from the Crane Game outside Game Panic, Paulownia Mall or during the Summer Festival
Tanakas Home Shopping TV Show (See Note)
Brand Watch (available on 9/6)
Brand Purse (available on 6/14, 7/26)
Brand Bag (available on 10/25, 12/6)
Perfume (available on 6/7, 6/14)
Note: These are only available on those specified dates. If you are planning to get all of them, you need to avoid going out on those dates.
HP and SP restore
Anytime in Tartarus, warp back to the first floor. Your party's HP and SP will be completely restored. It is recommended to do this before or after you have found the transport terminals to avoid going back and forth the lower levels.
Infinite stamina
On the night before a Full Moon your status will be set to Good no matter what it might have been before. If you are sick you will be made ready again.
In addition your stamina will never drop below good. If you get tired you may lose your Great status but you will never get Tired or Sick.
New Game+
After finishing the game, you will be prompted to save. Do so and you will be able to start a new game with your compendium, attributes, level and cash intact.
Orpheus Telos
To unlock the powerful form of Orpheus, you'll need to max all social links in one playthrough. Visit the Velvet Room and Igor will give you a Cipher's Mask. Fuse the required personas to get Orpheus Telos.
Preferred gifts - Chihiro
Most favored gifts:
Brand Watch
Brand Bag
Book Cover
Favorite:
Rose Bouquet
Mini Cactus
Glass Vase
Perfume
Brand Purse
Teddy Bear
Japanese Doll
Kaleidoscope
Jack Frost Doll
Ganesha Bank
Preferred gifts - Fuuka
Most favored gifts increase your relationship dramatically. Good gifts will still make them happy but with small-average increase with your relationship. Other gifts not on the list wont make any changes.
Most favored gifts:
Glass Vase
Brand Bag
Good Gifts:
Red Pine Bonsai
Mini Cactus
Brand Purse
Brand Watch
Teddy Bear
Japanese Doll
Kaleidoscope
Book Cover
Ganesha Bank
Preferred Gifts - Mitsuru
Most favored gifts:
Japanese Doll
Goggle-eyed Doll
Good gifts:
Red Pine Bonsai
Perfume
Brand Purse
Brand Watch
Brand Bag
Teddy Bear
Kaleidoscope
Book Cover
Lucky Charm
Preferred gifts - Yukari
Most favored gifts:
Perfume Rose
Brand Purse
Brand Watch
Brand Bag
Good gifts:
Rose Bouquet
Glass Vase
Teddy Bear
Preferred gifts - Yuko
Most favored gifts:
Brand Purse
Brand Watch
Brand Bag
Good gifts:
Mini Cactus
Teddy Bear
Kaleidoscope
Lucky Charm
Successfully hide from the girls during the Hotspring scene
1. First, hide on the east side of the central rock, staying close to it. Wait until the girls say that they found nothing.
2. When the girls decide to check the other side, slowly looped around the bottom of the rock and hide on the west side, again close to the rock, just behind Mitsuru. Wait until the girls found nothing again.
3. When the girls decide split up, slowly walk to the center gap, interact with it and select hide. Wait patiently until they decide to stop looking.
Unfortunately, you don't get anything for your efforts, but the following scenes are more amusing then the alternative with Mitsuru joking that Fuuka's detection is worthless without her clothes and Aigis muses about the difference in human bodies.