Shin Megami Tensei: Devil Survivor/Last Day - Gin's Path

Kudanshita
Haru event (advances time)

Shiba Park
Amane event (advances time)

Suidobashi
Free battle

Shiba Park
Boss battle - Jezebel

Make sure that your strongest team (most likely the main character’s) is equipped with Force property magic (Zandyne, Force Dance), Almighty magic (Holy Dance, Megido) and/or powerful physical attacks (Deathbound, Mighty Hit). If possible, equip a demon with Evil Wave (Dragons) or Chaos Wave (Vile demons).

Each of the other characters should have revival skills. Laksmi (with Samarecarm) is a very helpful demon. Useful passive skills are Endure, Blitzkrieg, Anti-Most and Force Rise/Jump. Anti-Fire/Null Fire are also very useful.

Move the main character straight into the fire and kill the Decarabia. Another character should move to the upright corner and target the Decarabia there. The remaining two move towards Amane to defeat the last Decarabia and to heal Amane whenever her HP display turns yellow. Alternatively, move all of the characters towards Amane. If they stay away from the lake of fire, the Decarabia in the center and top of the screen should ignore them, and will disappear when Amane comes around.

Attack Jezebel with your strongest attacks. Just like Belial, Jezebel attacks 3 times per turn. Most (or even everyone) of your party will die to her attacks (Maragidyne, Judgement, normal attack) when the turn is over. Keep attacking Jezebel with the main character's team and revive them with the other characters.

After taking away around 75% of Jezebels HP, Amane will regain control over her soul and runs away from Jezebel. The summoned copies will only follow after Amane, so ignore them and keep attacking Jezebel. You should be able to kill Jezebel before Amane will be attacked. Otherwise, protect Amane by healing her and fighting the followers. One possible way to handle both alternatives is to hold back the main character and a character with healing spells to attack Jezebel while the remaining two parties protect Amane. There is a chance that Amane will move into an alcove in the rocks and can be blocked in by one of the characters, preventing the copies from getting to her as long as the character survives.

Suidobashi
Free battle

Ikebukuro
Boss battle – Bishamon

In comparison with the two previous fights, this one is quite easy. Bishamon is weak to Ice damage, so prepare Bufudyne as well as Holy Dance / Megido. Once again, Evil Wave and Chaos Wave are helpful, too.

You will most likely not be able to avoid fighting some of the Rangdas that are guarding Bishamon. However, keep targeting Bishamon and kill him with your spells. Physical attacks are possible, as well. This battle should be won in a couple of minutes.

Suidobashi
Free battle

Shinagawa
Boss battle