Motivacion: power, completion, strategy, challenge, discovery, fantasy, story
Progresion: advancing little by little, facing different rooms to unlock items, stories, statues to find the missing sister.
IDK
The main loop:
the player explore the ruins of an abandoned city while searching for his sister.
The player choose a room from the map, clears it and advancing until you either succeed or are defeated.
Defeating enemies and using statues & runes gives you more info about them you can use in the next runs.