This will have ways to get all events for event viewer with the character & possible ways to unlock characters that aren't yours at the beginning of the game, any fights against characters you don't unlock such as Will-o'-the-Wisp (red & blue flamed version), Keres, Charade, Colossus, Doppelganger, 20 Lizard Men (Lizard Men not Lizardman) & Shadow Master will not be on the listings of routes to take (only exception is Dragon cause you unlock Chinese Sword Dragon Sword that way), but will be listed below the character with the paths needed to take to get to them, also characters with an star (★) beside their name may not appear if you are using the 6th weapon (4 effects), though after recent incidents of losing more than once it seems you can get them to appear as long as you've used a continue.

Path to Night Terror

You are not allowed to lose any match except special battles (Feel like you're being watched, though you do not need to do these battles as you can go ahead & pick choice two for these).
You CANNOT ring out whoevers name is in Blue, if you're fighting two people you can ring out the first, but not the second so make sure you know who you have to not ring out.
You can use any weapon you want.

Global

To get Netherworld 2 (event 11) for every character except Zasalamel (because he doesn't have it) you have to do the path to Night Terror and either:

Lose to anyone except Zasalamel when he throws the cog & Prepare to Defend Yourself!! battles (losing these hold no penalty)
Leave the Labyrinth
Lose to Olcadan (losing this will not get you event 6)
Siegfried & Nightmare go against the above