What will make your game stand out from other rogue-like games?
It is more like a mix between an arcade-game and a roguelike: no tons of key-bindings to learn, just start up and get into the action immediately (not unlike many of Kornel's games, of which I am a huge fan).
The magic system for example is also in the process of being reworked and I believe will be quite unlike the way most RLs handle the issue:
The spells you can cast are determined by finding wands in the dungeon, which have unlimited charge but a considerable cool-down. The Cool-down depends on your character's spirit stat, which in turn is determined by your class (like all stats) and the items you have equipped/worn/wielded.
I personally prefer ASCII to tiles, will it be an option?
No, sorry.