Gnosis is a stat added to Witchfire in January 2024 to improve game balance. To unlock, level up, and use it, you'll need to complete a large checklist of items.
WITCHFIRE – What is Gnosis? (and how to level up)
After returning to the Hermitage, turn right from the portal that takes you out into the world to fight the witch. Just inside the door of the building where your armory and mirror are, turn left. There will be a new hallway here that is lit in red. Take the stairs down into the church, and there will be a large table with a large book on it. Here you can learn Gnosis. You will need to pay 2,500 Volatile Witchfire to open this area.
Gnosis is an unlockable that "expands your understanding of dark magic…, revealing hidden paths and events," according to developers The Astronauts. You'll need to complete a list of items for each level of Gnosis, which becomes increasingly difficult as you level up. This is separate from your other stats, and while level-ups aren't required to complete Witchfire, Gnosis levels are.
The player's level no longer changes the difficulty of forays into the Witch's territories since the addition of Gnosis. As you level up, the Witch will rearrange her defenses, but the difficulty only increases as you increase your Gnosis level. With each Gnosis level, you add new enemies, new traps, and enemies become more challenging.