Acatalepsy might be a good fit for you! There are elements of horror, adventure and survival involved because the game is a world-hopping story where characters are trying to save worlds. SoL is quite minimal - mainly it's a short bit of downtime in between the worlds.

Characters lose their original powers for the most part, but they are replaced by another power of the player's choice and there are portions of plots where canon powers return.

There is a Hisoka there for Killua, but any one of your characters would be welcome.

Edit - forgot the link. Main navigation page