Very enjoyable, I find that it takes the best elements of the roguelike genre and translates them into an easy format that is great for killing time with a bit of thought.
The pixel art on the monsters is great, however gameplay-wise I think they stop being a major threat once a player gets used to finding the optimal path, unless they are stacked one after another which can be a russian roulette given the player's status at the moment. I understand that this is a major part of the roguelike experience but as laikaproj suggested, a big improvement can be made if for example, attacking monsters yields extra gold or loot drops. Otherwise, it becomes pretty straightforward to choose the path of least resistance and stacking monsters feels gimmicky.
I really like the variety in the items you can find but found that the engine tended to repeat a lot of the same items on a single run. Also a mobile version, especially offline would be a mainstay on my phone!
Solid 4/5, opened up the whole genre for me!