People have already commented on the art style, but it truly is great!
In it's current state the game lacks a bit variety. Most enemies feel pretty similar and i didn't really bother with the bribing aspect since levelling up seemed like the better choice.
Rewarding the player by providing more and more bits to the story is a fun idea.
I like how you have written the GM Character to doubts themself while also making no sense of the dungeon.
I kind of expected the GM to turn into the final enemy by trying to make sure you can never leave the dungeon so you'll never stop playing, but a random fire dragon that almost one shot me did basically the same :D
It's a fun game! Good Job!