It allows you to place noita's monsters in two factions and see how they fight.
There are some functions to modify creatures, such as increasing or decreasing HP, changing projectile trajectory, changing projectile type, changing AI, change blood material, etc
Preset some arena scenes: Forest, can generate many flammable trees; Factory, electrified steel wall; Lava pool, everyone is fighting on the bridge;
Some monsters crash games (such as Suur Ukko), so I removed them from the list. But I haven't tested all the enemies completely. I don't know if there are any enemies who will crash the game