This was one of my favorite RL's that I tried from the 7DRL2014, in addition to Power Lands.
The whole aesthetic is brilliant. It reminds me of the screenshots I've seen from the Curious Expedition; it would work really well with a 19th-early 20th century theme, with an Indiana Jones sort of feel. The way the maps are drawn, with the texture, and silhouettes, would reinforce the theme. I could imagine a game where you're trying to track down a single artifact (in a traditional roguelike way, with amulets or whatever), or instead, perhaps multiple artifacts. You could grab one for an easy win, but to to top the highscore chart, you'd need to risk more and capture multiple artifacts. DCSS does a good job of this.
Two areas of improvement (beyond balance/etc... ) are to add keyboard control and to make the ability explanation easier. Regarding the ability text, the icons are tiny and sort of nondescript, so it's hard for me to tell at a glance what my powers are. It would be nice if all my powers were listed on screen, or perhaps I could hit one button to see all of them. On the party selection screen, it would also be nice to see a list of what my current abilities are, and to make it more clear what my current stats are -- several times I started the next level, not realizing that I was half dead already. I never did figure out what the 3rd stat (circle/donut icon?) was. And naturally, I think a goal or objective of some kind would really help tie everything together.
All these are issues could easily be addressed with more time, I realize, but I think you have a really good start here.