This is a really good game!
Simplistic look in black and white, took me some time to get used to.
The combat is perfect, short and shows respect to the player. The general gameplay loop is nice overall but there is some caveats. The leveling is a bit to slow.
Gathering gold to upgrade becomes the main game here but the increase in health and power is a bit to slow. Running back to the start just to save some money becomes necessary and especially if you want to increase the guild level.
The game would have had to be smaller, or have some towns further into the game as checkpoints. I would like to have the option to show the full scale map. Then it would be easier to know where to go next.
Movement is kinda ok but it lacks strafing and does not queue and it is a bit slow, especially at the doorways. This should be more snappy IMO if you force the player to run these distances.
Sound and music is fitting and nice!
Well done!