Still very incomplete, but I like the idea here. Here's my feedback.
Good things :
The character has good animation, controls work fine, good music and sound effects, hotkeys are convenient (specially to replenish health) the rooms are simple which is helpful for battling, the buy/sell system works and the control responds well.
Things to improve on :
Instructions are shown too quickly, the char. stats. and dialogs could be better placed on the upper side of the screen, those obstruct visibility of the action, foes should have a distinct look, enemies tend to crowd around and attack all at the same time which leads to cheap deaths, a game over (or at least a restart button is a must have) maybe some check points to restart.
That's what I can think after doing a quick play, I hope this is helpful to you.