Great little game you have here!
Im a big fan of rogue likes and this game certainly scratched that itch.
I would consider this rogue a little harder than your modern rogue likes, and this is for a few reasons.
1. leveling barely makes a significant dent in terms of your characters ability. 5%- 10% increase in damage? while plausibly significant the fact that gear specific to your class drops so rarely that it is more or less your primary way or increasing DPS throughout the game...its just too slow to save you once your hit stages 4-5 where enemies have 20+ health. the player can maybe handle that one at a time..but rarely will they be give the space to do so.
2. The fact stamina/mana does not recharge..makes it a very rare resource that one cannot constantly rely on. mages might have incredibly powerful moves but the fact they can only be used in niche situations makes them less of a "in case of emergancy" move and more, "im lucky these monsters lined up the way they did". in one run as fire mage I had a crappy staff and a few good swords so I was forced to rely on fireball for almost every kill in the later levels...obviously my resources buckled eventually.
3. Im not sure if this is intentional but entering a new floor past floor 2 seems to spawn you in the middle of a room surrounded by enemies. it takes nearly all the resources you have to get through it. if you dont have the resources to blast/tank through 5-6 enemies at the same time...you just die. this occurs every subsequent floor.
4. there is no way of increasing player speed that I am aware of...I notice you can outrun some enemies but most of the time...you just have to tank the damage if you find yourself in an awkward position.
5. A hunger meter and re spawning enemies is rough. it discourages the player to spend too much time exploring and enemies dont give enough experience to really justify sticking around...however if the player if back tracking to a health or energy pool to prepare for the following floor and then they run into a strong enemy or two it can really hurt. not sure what these mechanics add to the game.
Suggestions
1. critical attacks on unaware enemies dont seem to do that much. its rare you will have a ranged weapon strong enough to do significant damage but with melee characters, its much harder to sneak up on enemies to strike them. maybe make criticals to 3x or 5x base damage instead of x2 or make it easier to do critical?
2. perhaps to sort out the slow DPS increase make more gear drop? I had a million darts that usually missed but I dont think I every ran into a single staff through my play throughs.
I found this quite hard (although thats not to say I didnt still love it! ^_^) I look forward to any future polish you might add
