According to the author, this is a utility for testing and modding the game.

In fact, it is a working and best trainer for this game.

Possibilities:

1. "Player" tab - changing health and stamina; teleport across bonfires and levels.

2. In "Stats" - change the hero's parameters, number of souls and humanity.

3. "Items" - spawn items (you need to know the English name - it's on the wiki).

4. "Cheats" - cheats for immortality, invisibility, etc.