Lots of fun and good time waster!
Simplistic and cartoonish art style lends to great 2D visuals.
The learning curve is well done. The monsters become more difficult at a good speed.
The drop rate of the items is good. However, food could be dropped a little more often. It would be good to know what the items offer before starting though. Perhaps you could have the "Help" page come once before playing. The walkthrough page you offer was a good touch too.
I like the idea of having the sub-floors. It would be great if they offered medals for this game.
Over all, well done. Fun and entertaining game.