Training Room

The Training Room is used for players, mainly beginners, to practise against all enemies and bosses to improve their skill.

The Training Room can be entered after obtaining a key from the from the corpse of the Tutorial Knight after she has died.

Access
The door leading to the Training Room is located at the starting area inside the Prisoners' Quarters, next to the entrance to the Tailor's room and the . The door is locked and needs a key that can be found on the corpse of the Tutorial Knight. This means that the training can be unlocked during their fourth run.

Use the key to permanently unlock the door.

Entrance hall
The entrance hall is decorated with various trophies like weapons and slain monsters, none of which can currently be encountered in the game itself. There, the Tutorial Knight can be found back from the dead, where she explains what the room is about.

Further along there is a set of 3 recycling tubes filled with gear, with each tube always containing items that are always red, violet, or green respectively for each stat. The items are random, activating the lever will drop down a few items but more will replenish in the tubes and the lever can be reused again. Previous items will eventually disappear after more items are dropped down. Guillain, wearing a unique getup, can also be found for mutation selection.

Beyond there is a big door that leads to the Combat Room for training against normal enemies. Further to the back there are doors leading to boss rooms to practice against them as well.

Combat Room
Inside the Combat Room is the Ghost, who will explain the mechanics of the room. There are be various rooms, most accessed by teleporters, with enemy statues similar to those in the Slumbering Sanctuary. All enemies inside a room can be awakened by activating a lever. The enemies can also be changed to any enemy that has previously been encountered, excluding mini-bosses such as Wardens or Giant Ticks. There is also the option to choose biome presets, which changes the enemies to those of any biome which one has explored previously.

When enemies are killed, they will respawn as statues to be fought again. If the player dies, they will be sent back to the entrance hall.

Boss rooms
At the end of the Training Room there can be found doors leading to each of the bosses. The doors are arranged according to tiers, tier 1 bosses on the first floor, tier 2 bosses on the second, and the Hand of the King at the top, with the entrance to a certain special encounter behind a hidden hole to the right which can be rolled through. All doors are closed before the bosses have been encountered at least once. This allows for players to practice a boss without having to spend the time getting to it every time.

When entering a boss door, the player will arrive at the boss level as usual. The Tutorial Knight awaits the player at the entrance and explains some how it works. Dying will return the player to the boss selection area without losing any of their equipped items or mutations.