There is a bug. i just started playing this game and i'm stucked at floor 2 which is after i delete the shield and pass the 40 leveled monster, i met the maid in purple or pink (which i can't avoid since she doesn't move and are blocking the way) and when i approached her, this comes out:
"Go to? 0%
Retreat / Cancel"
and when i clicked on retreat, i was brought back to where it first started, and even after i got to the second floor again, i met the maid again, and this just keeps going on and on.
i read from other reviews that you only met this maid on floor 5, 10, 15 etc. and that it would bring you back to the starting level but also give you lots of treasure, but that is not what is happening when i played it since i met her at second floor, and restarting doesn't change anything.
i wish this can be fixed quickly because i really want to enjoy playing this game and then rate it with satisfaction.
love you. have a nice day~