Alright, that sounds great! So, the floors don't change when you die then? All floors are different, but they are consistent?
This could turn out really good but it'll be a lot of effort. You'll have to populate every floor with group of enemies that are both varied, fairly enjoyable to fight and provide a good difficulty/progression curve. Think about that when you're designing the encounters. There's nothing wrong with reusing the same creatures, but every fight should offer something new, stimulate players to use a different tactic.
Anyways, so about the loot. How do you intend to incorporate that? Do the characters have stats, or do the items have "practical" effects, like mine? An example of a practical effect would be like "increases strength by 50%", rather than using some abstract number.